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wolfssl/wolfcrypt/src/rsa.c

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/* rsa.c
*
* Copyright (C) 2006-2016 wolfSSL Inc.
*
* This file is part of wolfSSL.
*
* wolfSSL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* wolfSSL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <wolfssl/wolfcrypt/settings.h>
#ifndef NO_RSA
#include <wolfssl/wolfcrypt/rsa.h>
#ifdef HAVE_FIPS
int wc_InitRsaKey(RsaKey* key, void* ptr)
{
return InitRsaKey_fips(key, ptr);
}
int wc_FreeRsaKey(RsaKey* key)
{
return FreeRsaKey_fips(key);
}
int wc_RsaPublicEncrypt(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key, WC_RNG* rng)
{
return RsaPublicEncrypt_fips(in, inLen, out, outLen, key, rng);
}
int wc_RsaPrivateDecryptInline(byte* in, word32 inLen, byte** out,
RsaKey* key)
{
return RsaPrivateDecryptInline_fips(in, inLen, out, key);
}
int wc_RsaPrivateDecrypt(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key)
{
return RsaPrivateDecrypt_fips(in, inLen, out, outLen, key);
}
int wc_RsaSSL_Sign(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key, WC_RNG* rng)
{
return RsaSSL_Sign_fips(in, inLen, out, outLen, key, rng);
}
int wc_RsaSSL_VerifyInline(byte* in, word32 inLen, byte** out, RsaKey* key)
{
return RsaSSL_VerifyInline_fips(in, inLen, out, key);
}
int wc_RsaSSL_Verify(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key)
{
return RsaSSL_Verify_fips(in, inLen, out, outLen, key);
}
int wc_RsaEncryptSize(RsaKey* key)
{
return RsaEncryptSize_fips(key);
}
int wc_RsaFlattenPublicKey(RsaKey* key, byte* a, word32* aSz, byte* b,
word32* bSz)
{
/* not specified as fips so not needing _fips */
return RsaFlattenPublicKey(key, a, aSz, b, bSz);
}
#ifdef WOLFSSL_KEY_GEN
int wc_MakeRsaKey(RsaKey* key, int size, long e, WC_RNG* rng)
{
return MakeRsaKey(key, size, e, rng);
}
#endif
#ifdef HAVE_CAVIUM
int wc_RsaInitCavium(RsaKey* key, int i)
{
return RsaInitCavium(key, i);
}
void wc_RsaFreeCavium(RsaKey* key)
{
RsaFreeCavium(key);
}
#endif
/* these are functions in asn and are routed to wolfssl/wolfcrypt/asn.c
* wc_RsaPrivateKeyDecode
* wc_RsaPublicKeyDecode
*/
#else /* else build without fips */
#include <wolfssl/wolfcrypt/random.h>
#include <wolfssl/wolfcrypt/error-crypt.h>
#include <wolfssl/wolfcrypt/logging.h>
#ifdef NO_INLINE
#include <wolfssl/wolfcrypt/misc.h>
#else
#define WOLFSSL_MISC_INCLUDED
#include <wolfcrypt/src/misc.c>
#endif
#ifdef HAVE_CAVIUM
static int InitCaviumRsaKey(RsaKey* key, void* heap);
static int FreeCaviumRsaKey(RsaKey* key);
static int CaviumRsaPublicEncrypt(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key);
static int CaviumRsaPrivateDecrypt(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key);
static int CaviumRsaSSL_Sign(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key);
static int CaviumRsaSSL_Verify(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key);
#endif
enum {
RSA_PUBLIC_ENCRYPT = 0,
RSA_PUBLIC_DECRYPT = 1,
RSA_PRIVATE_ENCRYPT = 2,
RSA_PRIVATE_DECRYPT = 3,
RSA_BLOCK_TYPE_1 = 1,
RSA_BLOCK_TYPE_2 = 2,
RSA_MIN_SIZE = 512,
RSA_MAX_SIZE = 4096,
RSA_MIN_PAD_SZ = 11 /* separator + 0 + pad value + 8 pads */
};
int wc_InitRsaKey(RsaKey* key, void* heap)
{
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return InitCaviumRsaKey(key, heap);
#endif
key->type = -1; /* haven't decided yet */
key->heap = heap;
/* TomsFastMath doesn't use memory allocation */
#ifndef USE_FAST_MATH
key->n.dp = key->e.dp = 0; /* public alloc parts */
key->d.dp = key->p.dp = 0; /* private alloc parts */
key->q.dp = key->dP.dp = 0;
key->u.dp = key->dQ.dp = 0;
#else
mp_init(&key->n);
mp_init(&key->e);
mp_init(&key->d);
mp_init(&key->p);
mp_init(&key->q);
mp_init(&key->dP);
mp_init(&key->dQ);
mp_init(&key->u);
#endif
return 0;
}
int wc_FreeRsaKey(RsaKey* key)
{
(void)key;
if (key == NULL)
return 0;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return FreeCaviumRsaKey(key);
#endif
/* TomsFastMath doesn't use memory allocation */
#ifndef USE_FAST_MATH
if (key->type == RSA_PRIVATE) {
mp_clear(&key->u);
mp_clear(&key->dQ);
mp_clear(&key->dP);
mp_clear(&key->q);
mp_clear(&key->p);
mp_clear(&key->d);
}
mp_clear(&key->e);
mp_clear(&key->n);
#else
/* still clear private key memory information when free'd */
if (key->type == RSA_PRIVATE) {
mp_clear(&key->u);
mp_clear(&key->dQ);
mp_clear(&key->u);
mp_clear(&key->dP);
mp_clear(&key->q);
mp_clear(&key->p);
mp_clear(&key->d);
}
#endif
return 0;
}
#ifndef WC_NO_RSA_OAEP
/* Uses MGF1 standard as a mask generation function
hType: hash type used
seed: seed to use for generating mask
seedSz: size of seed buffer
out: mask output after generation
outSz: size of output buffer
*/
static int wc_MGF1(enum wc_HashType hType, byte* seed, word32 seedSz,
byte* out, word32 outSz)
{
byte* tmp;
/* needs to be large enough for seed size plus counter(4) */
byte tmpA[WC_MAX_DIGEST_SIZE + 4];
byte tmpF; /* 1 if dynamic memory needs freed */
word32 tmpSz;
int hLen;
int ret;
word32 counter;
word32 idx;
hLen = wc_HashGetDigestSize(hType);
counter = 0;
idx = 0;
/* check error return of wc_HashGetDigestSize */
if (hLen < 0) {
return hLen;
}
/* if tmp is not large enough than use some dynamic memory */
if ((seedSz + 4) > sizeof(tmpA) || (word32)hLen > sizeof(tmpA)) {
/* find largest amount of memory needed which will be the max of
* hLen and (seedSz + 4) since tmp is used to store the hash digest */
tmpSz = ((seedSz + 4) > (word32)hLen)? seedSz + 4: (word32)hLen;
tmp = (byte*)XMALLOC(tmpSz, NULL, DYNAMIC_TYPE_TMP_BUFFER);
if (tmp == NULL) {
return MEMORY_E;
}
tmpF = 1; /* make sure to free memory when done */
}
else {
/* use array on the stack */
tmpSz = sizeof(tmpA);
tmp = tmpA;
tmpF = 0; /* no need to free memory at end */
}
do {
int i = 0;
XMEMCPY(tmp, seed, seedSz);
/* counter to byte array appended to tmp */
tmp[seedSz] = (counter >> 24) & 0xFF;
tmp[seedSz + 1] = (counter >> 16) & 0xFF;
tmp[seedSz + 2] = (counter >> 8) & 0xFF;
tmp[seedSz + 3] = (counter) & 0xFF;
/* hash and append to existing output */
if ((ret = wc_Hash(hType, tmp, (seedSz + 4), tmp, tmpSz)) != 0) {
/* check for if dynamic memory was needed, then free */
if (tmpF) {
XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
}
return ret;
}
for (i = 0; i < hLen && idx < outSz; i++) {
out[idx++] = tmp[i];
}
counter++;
}
while (idx < outSz);
/* check for if dynamic memory was needed, then free */
if (tmpF) {
XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
}
return 0;
}
/* helper function to direct which mask generation function is used
switeched on type input
*/
static int wc_MGF(int type, byte* seed, word32 seedSz,
byte* out, word32 outSz)
{
int ret;
switch(type) {
#ifndef NO_SHA
case WC_MGF1SHA1:
ret = wc_MGF1(WC_HASH_TYPE_SHA, seed, seedSz, out, outSz);
break;
#endif
#ifndef NO_SHA256
case WC_MGF1SHA256:
ret = wc_MGF1(WC_HASH_TYPE_SHA256, seed, seedSz, out, outSz);
break;
#endif
#ifdef WOLFSSL_SHA512
#ifdef WOLFSSL_SHA384
case WC_MGF1SHA384:
ret = wc_MGF1(WC_HASH_TYPE_SHA384, seed, seedSz, out, outSz);
break;
#endif
case WC_MGF1SHA512:
ret = wc_MGF1(WC_HASH_TYPE_SHA512, seed, seedSz, out, outSz);
break;
#endif
default:
WOLFSSL_MSG("Unknown MGF function: check build options");
ret = BAD_FUNC_ARG;
}
/* in case of default avoid unused warning */
(void)seed;
(void)seedSz;
(void)out;
(void)outSz;
return ret;
}
static int wc_RsaPad_OAEP(const byte* input, word32 inputLen, byte* pkcsBlock,
word32 pkcsBlockLen, byte padValue, WC_RNG* rng,
enum wc_HashType hType, int mgf, byte* optLabel, word32 labelLen)
{
int ret;
int hLen;
int psLen;
int i;
word32 idx;
byte* dbMask;
#ifdef WOLFSSL_SMALL_STACK
byte* lHash = NULL;
byte* seed = NULL;
#else
/* must be large enough to contain largest hash */
byte lHash[WC_MAX_DIGEST_SIZE];
byte seed[ WC_MAX_DIGEST_SIZE];
#endif
/* can use with no lable but catch if no lable provided while having
length > 0 */
if (optLabel == NULL && labelLen > 0) {
return BUFFER_E;
}
/* limit of label is the same as limit of hash function which is massive */
hLen = wc_HashGetDigestSize(hType);
if (hLen < 0) {
return hLen;
}
#ifdef WOLFSSL_SMALL_STACK
lHash = (byte*)XMALLOC(hLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
if (lHash == NULL) {
return MEMORY_E;
}
seed = (byte*)XMALLOC(hLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
if (seed == NULL) {
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
return MEMORY_E;
}
#else
/* hLen should never be larger than lHash since size is max digest size,
but check before blindly calling wc_Hash */
if ((word32)hLen > sizeof(lHash)) {
WOLFSSL_MSG("OAEP lHash to small for digest!!");
return MEMORY_E;
}
#endif
if ((ret = wc_Hash(hType, optLabel, labelLen, lHash, hLen)) != 0) {
WOLFSSL_MSG("OAEP hash type possibly not supported or lHash to small");
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return ret;
}
/* handles check of location for idx as well as psLen, cast to int to check
for pkcsBlockLen(k) - 2 * hLen - 2 being negative
This check is similar to decryption where k > 2 * hLen + 2 as msg
size aproaches 0. In decryption if k is less than or equal -- then there
is no possible room for msg.
k = RSA key size
hLen = hash digest size -- will always be >= 0 at this point
*/
if ((word32)(2 * hLen + 2) > pkcsBlockLen) {
WOLFSSL_MSG("OAEP pad error hash to big for RSA key size");
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return BAD_FUNC_ARG;
}
if (inputLen > (pkcsBlockLen - 2 * hLen - 2)) {
WOLFSSL_MSG("OAEP pad error message too long");
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return BAD_FUNC_ARG;
}
/* concatenate lHash || PS || 0x01 || msg */
idx = pkcsBlockLen - 1 - inputLen;
psLen = pkcsBlockLen - inputLen - 2 * hLen - 2;
if (pkcsBlockLen < inputLen) { /*make sure not writing over end of buffer */
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return BUFFER_E;
}
XMEMCPY(pkcsBlock + (pkcsBlockLen - inputLen), input, inputLen);
pkcsBlock[idx--] = 0x01; /* PS and M separator */
while (psLen > 0 && idx > 0) {
pkcsBlock[idx--] = 0x00;
psLen--;
}
idx = idx - hLen + 1;
XMEMCPY(pkcsBlock + idx, lHash, hLen);
/* generate random seed */
if ((ret = wc_RNG_GenerateBlock(rng, seed, hLen)) != 0) {
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return ret;
}
/* create maskedDB from dbMask */
dbMask = (byte*)XMALLOC(pkcsBlockLen - hLen - 1, NULL, DYNAMIC_TYPE_RSA);
if (dbMask == NULL) {
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return MEMORY_E;
}
XMEMSET(dbMask, 0, pkcsBlockLen - hLen - 1); /* help static analyzer */
ret = wc_MGF(mgf, seed, hLen, dbMask, pkcsBlockLen - hLen - 1);
if (ret != 0) {
XFREE(dbMask, NULL, DYNAMIC_TYPE_RSA);
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return ret;
}
i = 0;
idx = hLen + 1;
while (idx < pkcsBlockLen && (word32)i < (pkcsBlockLen - hLen -1)) {
pkcsBlock[idx] = dbMask[i++] ^ pkcsBlock[idx];
idx++;
}
XFREE(dbMask, NULL, DYNAMIC_TYPE_RSA);
/* create maskedSeed from seedMask */
idx = 0;
pkcsBlock[idx++] = 0x00;
/* create seedMask inline */
if ((ret = wc_MGF(mgf, pkcsBlock + hLen + 1, pkcsBlockLen - hLen - 1,
pkcsBlock + 1, hLen)) != 0) {
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
return ret;
}
/* xor created seedMask with seed to make maskedSeed */
i = 0;
while (idx < (word32)(hLen + 1) && i < hLen) {
pkcsBlock[idx] = pkcsBlock[idx] ^ seed[i++];
idx++;
}
#ifdef WOLFSSL_SMALL_STACK
XFREE(lHash, NULL, DYNAMIC_TYPE_TMP_BUFFER);
XFREE(seed, NULL, DYNAMIC_TYPE_TMP_BUFFER);
#endif
(void)padValue;
return 0;
}
#endif /* WC_NO_RSA_OAEP */
static int wc_RsaPad(const byte* input, word32 inputLen, byte* pkcsBlock,
word32 pkcsBlockLen, byte padValue, WC_RNG* rng)
{
if (inputLen == 0 || pkcsBlockLen == 0) {
return BAD_FUNC_ARG;
}
pkcsBlock[0] = 0x0; /* set first byte to zero and advance */
pkcsBlock++; pkcsBlockLen--;
pkcsBlock[0] = padValue; /* insert padValue */
if (padValue == RSA_BLOCK_TYPE_1) {
if (pkcsBlockLen < inputLen + 2) {
return RSA_PAD_E;
}
/* pad with 0xff bytes */
XMEMSET(&pkcsBlock[1], 0xFF, pkcsBlockLen - inputLen - 2);
}
else {
/* pad with non-zero random bytes */
word32 padLen, i;
int ret;
if (pkcsBlockLen < inputLen + 1) {
return RSA_PAD_E;
}
padLen = pkcsBlockLen - inputLen - 1;
ret = wc_RNG_GenerateBlock(rng, &pkcsBlock[1], padLen);
if (ret != 0)
return ret;
/* remove zeros */
for (i = 1; i < padLen; i++)
if (pkcsBlock[i] == 0) pkcsBlock[i] = 0x01;
}
pkcsBlock[pkcsBlockLen-inputLen-1] = 0; /* separator */
XMEMCPY(pkcsBlock+pkcsBlockLen-inputLen, input, inputLen);
return 0;
}
#ifndef WC_NO_RSA_OAEP
/* helper function to direct which padding is used */
static int wc_RsaPad_ex(const byte* input, word32 inputLen, byte* pkcsBlock,
word32 pkcsBlockLen, byte padValue, WC_RNG* rng, int padType,
enum wc_HashType hType, int mgf, byte* optLabel, word32 labelLen)
{
int ret;
switch (padType)
{
case WC_RSA_PKCSV15_PAD:
WOLFSSL_MSG("wolfSSL Using RSA PKCSV15 padding");
ret = wc_RsaPad(input, inputLen, pkcsBlock, pkcsBlockLen,
padValue, rng);
break;
case WC_RSA_OAEP_PAD:
WOLFSSL_MSG("wolfSSL Using RSA OAEP padding");
ret = wc_RsaPad_OAEP(input, inputLen, pkcsBlock, pkcsBlockLen,
padValue, rng, hType, mgf, optLabel, labelLen);
break;
default:
WOLFSSL_MSG("Unknown RSA Pad Type");
ret = RSA_PAD_E;
}
/* silence warning if not used with padding scheme */
(void)padType;
(void)hType;
(void)mgf;
(void)optLabel;
(void)labelLen;
return ret;
}
/* UnPad plaintext, set start to *output, return length of plaintext,
* < 0 on error */
static int wc_RsaUnPad_OAEP(byte *pkcsBlock, unsigned int pkcsBlockLen,
byte **output, enum wc_HashType hType, int mgf,
byte* optLabel, word32 labelLen)
{
int hLen;
int ret;
byte h[WC_MAX_DIGEST_SIZE]; /* max digest size */
byte* tmp;
word32 idx;
hLen = wc_HashGetDigestSize(hType);
if ((hLen < 0) || (pkcsBlockLen < (2 * (word32)hLen + 2))) {
return BAD_FUNC_ARG;
}
tmp = (byte*)XMALLOC(pkcsBlockLen, NULL, DYNAMIC_TYPE_TMP_BUFFER);
if (tmp == NULL) {
return MEMORY_E;
}
XMEMSET(tmp, 0, pkcsBlockLen);
/* find seedMask value */
if ((ret = wc_MGF(mgf, (byte*)(pkcsBlock + (hLen + 1)),
pkcsBlockLen - hLen - 1, tmp, hLen)) != 0) {
XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
return ret;
}
/* xor seedMask value with maskedSeed to get seed value */
for (idx = 0; idx < (word32)hLen; idx++) {
tmp[idx] = tmp[idx] ^ pkcsBlock[1 + idx];
}
/* get dbMask value */
if ((ret = wc_MGF(mgf, tmp, hLen, tmp + hLen,
pkcsBlockLen - hLen - 1)) != 0) {
XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
return ret;
}
/* get DB value by doing maskedDB xor dbMask */
for (idx = 0; idx < (pkcsBlockLen - hLen - 1); idx++) {
pkcsBlock[hLen + 1 + idx] = pkcsBlock[hLen + 1 + idx] ^ tmp[idx + hLen];
}
/* done with use of tmp buffer */
XFREE(tmp, NULL, DYNAMIC_TYPE_TMP_BUFFER);
/* advance idx to index of PS and msg separator */
idx = hLen + 2 + hLen;
while (idx < pkcsBlockLen && pkcsBlock[idx] == 0) {idx++;}
/* create hash of label for comparision with hash sent */
if ((ret = wc_Hash(hType, optLabel, labelLen, h, hLen)) != 0) {
return ret;
}
/* say no to chosen ciphertext attack.
Comparison of lHash, Y, and separator value needs to all happen in
constant time.
Attackers should not be able to get error condition from the timing of
these checks.
*/
ret = 0;
ret |= ConstantCompare(pkcsBlock + hLen + 1, h, hLen);
ret += pkcsBlock[idx++] ^ 0x01; /* separator value is 0x01 */
ret += pkcsBlock[0] ^ 0x00; /* Y, the first value, should be 0 */
if (ret != 0) {
return BAD_PADDING_E;
}
/* adjust pointer to correct location in array and return size of M */
*output = (byte*)(pkcsBlock + idx);
return pkcsBlockLen - idx;
}
#endif /* WC_NO_RSA_OAEP */
/* UnPad plaintext, set start to *output, return length of plaintext,
* < 0 on error */
static int RsaUnPad(const byte *pkcsBlock, unsigned int pkcsBlockLen,
byte **output, byte padValue)
{
word32 maxOutputLen = (pkcsBlockLen > 10) ? (pkcsBlockLen - 10) : 0,
invalid = 0,
i = 1,
outputLen;
if (pkcsBlockLen == 0) {
return BAD_FUNC_ARG;
}
if (pkcsBlock[0] != 0x0) /* skip past zero */
invalid = 1;
pkcsBlock++; pkcsBlockLen--;
/* Require block type padValue */
invalid = (pkcsBlock[0] != padValue) || invalid;
/* verify the padding until we find the separator */
if (padValue == RSA_BLOCK_TYPE_1) {
while (i<pkcsBlockLen && pkcsBlock[i++] == 0xFF) {/* Null body */}
}
else {
while (i<pkcsBlockLen && pkcsBlock[i++]) {/* Null body */}
}
if(!(i==pkcsBlockLen || pkcsBlock[i-1]==0)) {
WOLFSSL_MSG("RsaUnPad error, bad formatting");
return RSA_PAD_E;
}
outputLen = pkcsBlockLen - i;
invalid = (outputLen > maxOutputLen) || invalid;
if (invalid) {
WOLFSSL_MSG("RsaUnPad error, bad formatting");
return RSA_PAD_E;
}
*output = (byte *)(pkcsBlock + i);
return outputLen;
}
#ifndef WC_NO_RSA_OAEP
/* helper function to direct unpadding */
static int wc_RsaUnPad_ex(byte* pkcsBlock, word32 pkcsBlockLen, byte** out,
byte padValue, int padType, enum wc_HashType hType,
int mgf, byte* optLabel, word32 labelLen)
{
int ret;
switch (padType)
{
case WC_RSA_PKCSV15_PAD:
WOLFSSL_MSG("wolfSSL Using RSA PKCSV15 padding");
ret = RsaUnPad(pkcsBlock, pkcsBlockLen, out, padValue);
break;
case WC_RSA_OAEP_PAD:
WOLFSSL_MSG("wolfSSL Using RSA OAEP padding");
ret = wc_RsaUnPad_OAEP((byte*)pkcsBlock, pkcsBlockLen, out,
hType, mgf, optLabel, labelLen);
break;
default:
WOLFSSL_MSG("Unknown RSA Pad Type");
ret = RSA_PAD_E;
}
/* silence warning if not used with padding scheme */
(void)padType;
(void)hType;
(void)mgf;
(void)optLabel;
(void)labelLen;
return ret;
}
#endif /* WC_NO_RSA_OAEP */
static int wc_RsaFunction(const byte* in, word32 inLen, byte* out,
word32* outLen, int type, RsaKey* key)
{
#define ERROR_OUT(x) { ret = (x); goto done;}
mp_int tmp;
int ret = 0;
word32 keyLen, len;
if (mp_init(&tmp) != MP_OKAY)
return MP_INIT_E;
if (mp_read_unsigned_bin(&tmp, (byte*)in, inLen) != MP_OKAY)
ERROR_OUT(MP_READ_E);
if (type == RSA_PRIVATE_DECRYPT || type == RSA_PRIVATE_ENCRYPT) {
#ifdef RSA_LOW_MEM /* half as much memory but twice as slow */
if (mp_exptmod(&tmp, &key->d, &key->n, &tmp) != MP_OKAY)
ERROR_OUT(MP_EXPTMOD_E);
#else
#define INNER_ERROR_OUT(x) { ret = (x); goto inner_done; }
mp_int tmpa, tmpb;
if (mp_init(&tmpa) != MP_OKAY)
ERROR_OUT(MP_INIT_E);
if (mp_init(&tmpb) != MP_OKAY) {
mp_clear(&tmpa);
ERROR_OUT(MP_INIT_E);
}
/* tmpa = tmp^dP mod p */
if (mp_exptmod(&tmp, &key->dP, &key->p, &tmpa) != MP_OKAY)
INNER_ERROR_OUT(MP_EXPTMOD_E);
/* tmpb = tmp^dQ mod q */
if (mp_exptmod(&tmp, &key->dQ, &key->q, &tmpb) != MP_OKAY)
INNER_ERROR_OUT(MP_EXPTMOD_E);
/* tmp = (tmpa - tmpb) * qInv (mod p) */
if (mp_sub(&tmpa, &tmpb, &tmp) != MP_OKAY)
INNER_ERROR_OUT(MP_SUB_E);
if (mp_mulmod(&tmp, &key->u, &key->p, &tmp) != MP_OKAY)
INNER_ERROR_OUT(MP_MULMOD_E);
/* tmp = tmpb + q * tmp */
if (mp_mul(&tmp, &key->q, &tmp) != MP_OKAY)
INNER_ERROR_OUT(MP_MUL_E);
if (mp_add(&tmp, &tmpb, &tmp) != MP_OKAY)
INNER_ERROR_OUT(MP_ADD_E);
inner_done:
mp_clear(&tmpa);
mp_clear(&tmpb);
if (ret != 0) {
goto done;
}
#endif /* RSA_LOW_MEM */
}
else if (type == RSA_PUBLIC_ENCRYPT || type == RSA_PUBLIC_DECRYPT) {
if (mp_exptmod(&tmp, &key->e, &key->n, &tmp) != MP_OKAY)
ERROR_OUT(MP_EXPTMOD_E);
}
else
ERROR_OUT(RSA_WRONG_TYPE_E);
keyLen = mp_unsigned_bin_size(&key->n);
if (keyLen > *outLen)
ERROR_OUT(RSA_BUFFER_E);
len = mp_unsigned_bin_size(&tmp);
/* pad front w/ zeros to match key length */
while (len < keyLen) {
*out++ = 0x00;
len++;
}
*outLen = keyLen;
/* convert */
if (mp_to_unsigned_bin(&tmp, out) != MP_OKAY)
ERROR_OUT(MP_TO_E);
done:
mp_clear(&tmp);
if (ret == MP_EXPTMOD_E) {
WOLFSSL_MSG("RSA_FUNCTION MP_EXPTMOD_E: memory/config problem");
}
return ret;
}
int wc_RsaPublicEncrypt(const byte* in, word32 inLen, byte* out, word32 outLen,
RsaKey* key, WC_RNG* rng)
{
int sz, ret;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return CaviumRsaPublicEncrypt(in, inLen, out, outLen, key);
#endif
sz = mp_unsigned_bin_size(&key->n);
if (sz > (int)outLen)
return RSA_BUFFER_E;
if (sz < RSA_MIN_PAD_SZ) {
return WC_KEY_SIZE_E;
}
if (inLen > (word32)(sz - RSA_MIN_PAD_SZ))
return RSA_BUFFER_E;
ret = wc_RsaPad(in, inLen, out, sz, RSA_BLOCK_TYPE_2, rng);
if (ret != 0)
return ret;
if ((ret = wc_RsaFunction(out, sz, out, &outLen,
RSA_PUBLIC_ENCRYPT, key)) < 0)
sz = ret;
return sz;
}
#ifndef WC_NO_RSA_OAEP
/* Gives the option of choosing padding type
in : input to be encrypted
inLen: length of input buffer
out: encrypted output
outLen: length of encrypted output buffer
key : wolfSSL initialized RSA key struct
rng : wolfSSL initialized random number struct
type : type of padding to use ie WC_RSA_OAEP_PAD
hash : type of hash algorithm to use found in wolfssl/wolfcrypt/hash.h
mgf : type of mask generation function to use
label : optional label
labelSz : size of optional label buffer */
int wc_RsaPublicEncrypt_ex(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key, WC_RNG* rng, int type,
enum wc_HashType hash, int mgf, byte* label, word32 labelSz)
{
int sz, ret;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return CaviumRsaPublicEncrypt(in, inLen, out, outLen, key);
#endif
sz = mp_unsigned_bin_size(&key->n);
if (sz > (int)outLen)
return RSA_BUFFER_E;
if (sz < RSA_MIN_PAD_SZ) {
return WC_KEY_SIZE_E;
}
if (inLen > (word32)(sz - RSA_MIN_PAD_SZ))
return RSA_BUFFER_E;
ret = wc_RsaPad_ex(in, inLen, out, sz, RSA_BLOCK_TYPE_2, rng,
type, hash, mgf, label, labelSz);
if (ret != 0)
return ret;
if ((ret = wc_RsaFunction(out, sz, out, &outLen,
RSA_PUBLIC_ENCRYPT, key)) < 0)
sz = ret;
return sz;
}
#endif /* WC_NO_RSA_OAEP */
int wc_RsaPrivateDecryptInline(byte* in, word32 inLen, byte** out, RsaKey* key)
{
int ret;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC) {
ret = CaviumRsaPrivateDecrypt(in, inLen, in, inLen, key);
if (ret > 0)
*out = in;
return ret;
}
#endif
if ((ret = wc_RsaFunction(in, inLen, in, &inLen, RSA_PRIVATE_DECRYPT, key))
< 0) {
return ret;
}
return RsaUnPad(in, inLen, out, RSA_BLOCK_TYPE_2);
}
#ifndef WC_NO_RSA_OAEP
/* Gives the option of choosing padding type
in : input to be decrypted
inLen: length of input buffer
out: pointer to place of decrypted message
key : wolfSSL initialized RSA key struct
type : type of padding to use ie WC_RSA_OAEP_PAD
hash : type of hash algorithm to use found in wolfssl/wolfcrypt/hash.h
mgf : type of mask generation function to use
label : optional label
labelSz : size of optional label buffer */
int wc_RsaPrivateDecryptInline_ex(byte* in, word32 inLen, byte** out,
RsaKey* key, int type, enum wc_HashType hash, int mgf,
byte* label, word32 labelSz)
{
int ret;
/* sanity check on arguments */
if (in == NULL || key == NULL) {
return BAD_FUNC_ARG;
}
/* check if given a label size but not given a label buffer */
if (label == NULL && labelSz > 0) {
return BAD_FUNC_ARG;
}
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC) {
ret = CaviumRsaPrivateDecrypt(in, inLen, in, inLen, key);
if (ret > 0)
*out = in;
return ret;
}
#endif
if ((ret = wc_RsaFunction(in, inLen, in, &inLen, RSA_PRIVATE_DECRYPT, key))
< 0) {
return ret;
}
return wc_RsaUnPad_ex(in, inLen, out, RSA_BLOCK_TYPE_2, type, hash, mgf,
label, labelSz);
}
#endif /* WC_NO_RSA_OAEP */
int wc_RsaPrivateDecrypt(const byte* in, word32 inLen, byte* out, word32 outLen,
RsaKey* key)
{
int plainLen;
byte* tmp;
byte* pad = 0;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return CaviumRsaPrivateDecrypt(in, inLen, out, outLen, key);
#endif
tmp = (byte*)XMALLOC(inLen, key->heap, DYNAMIC_TYPE_RSA);
if (tmp == NULL) {
return MEMORY_E;
}
XMEMCPY(tmp, in, inLen);
if ( (plainLen = wc_RsaPrivateDecryptInline(tmp, inLen, &pad, key) ) < 0) {
XFREE(tmp, key->heap, DYNAMIC_TYPE_RSA);
return plainLen;
}
if (plainLen > (int)outLen)
plainLen = BAD_FUNC_ARG;
else
XMEMCPY(out, pad, plainLen);
ForceZero(tmp, inLen);
XFREE(tmp, key->heap, DYNAMIC_TYPE_RSA);
return plainLen;
}
#ifndef WC_NO_RSA_OAEP
/* Gives the option of choosing padding type
in : input to be decrypted
inLen: length of input buffer
out: decrypted message
outLen: length of decrypted message in bytes
key : wolfSSL initialized RSA key struct
type : type of padding to use ie WC_RSA_OAEP_PAD
hash : type of hash algorithm to use found in wolfssl/wolfcrypt/hash.h
mgf : type of mask generation function to use
label : optional label
labelSz : size of optional label buffer */
int wc_RsaPrivateDecrypt_ex(const byte* in, word32 inLen, byte* out, word32 outLen,
RsaKey* key, int type, enum wc_HashType hash, int mgf,
byte* label, word32 labelSz)
{
int plainLen;
byte* tmp;
byte* pad = 0;
/* sanity check on arguments */
if (out == NULL || in == NULL || key == NULL) {
return BAD_FUNC_ARG;
}
/* check if given a label size but not given a label buffer */
if (label == NULL && labelSz > 0) {
return BAD_FUNC_ARG;
}
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return CaviumRsaPrivateDecrypt(in, inLen, out, outLen, key);
#endif
tmp = (byte*)XMALLOC(inLen, key->heap, DYNAMIC_TYPE_RSA);
if (tmp == NULL) {
return MEMORY_E;
}
XMEMCPY(tmp, in, inLen);
if ( (plainLen = wc_RsaPrivateDecryptInline_ex(tmp, inLen, &pad, key,
type, hash, mgf, label, labelSz) ) < 0) {
XFREE(tmp, key->heap, DYNAMIC_TYPE_RSA);
return plainLen;
}
if (plainLen > (int)outLen || pad == NULL)
plainLen = BAD_FUNC_ARG;
else
XMEMCPY(out, pad, plainLen);
ForceZero(tmp, inLen);
XFREE(tmp, key->heap, DYNAMIC_TYPE_RSA);
return plainLen;
}
#endif /* WC_NO_RSA_OAEP */
/* for Rsa Verify */
int wc_RsaSSL_VerifyInline(byte* in, word32 inLen, byte** out, RsaKey* key)
{
int ret;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC) {
ret = CaviumRsaSSL_Verify(in, inLen, in, inLen, key);
if (ret > 0)
*out = in;
return ret;
}
#endif
if ((ret = wc_RsaFunction(in, inLen, in, &inLen, RSA_PUBLIC_DECRYPT, key))
< 0) {
return ret;
}
return RsaUnPad(in, inLen, out, RSA_BLOCK_TYPE_1);
}
int wc_RsaSSL_Verify(const byte* in, word32 inLen, byte* out, word32 outLen,
RsaKey* key)
{
int plainLen;
byte* tmp;
byte* pad = 0;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return CaviumRsaSSL_Verify(in, inLen, out, outLen, key);
#endif
tmp = (byte*)XMALLOC(inLen, key->heap, DYNAMIC_TYPE_RSA);
if (tmp == NULL) {
return MEMORY_E;
}
XMEMCPY(tmp, in, inLen);
if ( (plainLen = wc_RsaSSL_VerifyInline(tmp, inLen, &pad, key) ) < 0) {
XFREE(tmp, key->heap, DYNAMIC_TYPE_RSA);
return plainLen;
}
if (plainLen > (int)outLen)
plainLen = BAD_FUNC_ARG;
else
XMEMCPY(out, pad, plainLen);
ForceZero(tmp, inLen);
XFREE(tmp, key->heap, DYNAMIC_TYPE_RSA);
return plainLen;
}
/* for Rsa Sign */
int wc_RsaSSL_Sign(const byte* in, word32 inLen, byte* out, word32 outLen,
RsaKey* key, WC_RNG* rng)
{
int sz, ret;
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return CaviumRsaSSL_Sign(in, inLen, out, outLen, key);
#endif
sz = mp_unsigned_bin_size(&key->n);
if (sz > (int)outLen)
return RSA_BUFFER_E;
if (sz < RSA_MIN_PAD_SZ) {
return WC_KEY_SIZE_E;
}
if (inLen > (word32)(sz - RSA_MIN_PAD_SZ))
return RSA_BUFFER_E;
ret = wc_RsaPad(in, inLen, out, sz, RSA_BLOCK_TYPE_1, rng);
if (ret != 0)
return ret;
if ((ret = wc_RsaFunction(out, sz, out, &outLen,
RSA_PRIVATE_ENCRYPT,key)) < 0)
sz = ret;
return sz;
}
int wc_RsaEncryptSize(RsaKey* key)
{
#ifdef HAVE_CAVIUM
if (key->magic == WOLFSSL_RSA_CAVIUM_MAGIC)
return key->c_nSz;
#endif
return mp_unsigned_bin_size(&key->n);
}
/* flatten RsaKey structure into individual elements (e, n) */
int wc_RsaFlattenPublicKey(RsaKey* key, byte* e, word32* eSz, byte* n,
word32* nSz)
{
int sz, ret;
if (key == NULL || e == NULL || eSz == NULL || n == NULL || nSz == NULL)
return BAD_FUNC_ARG;
sz = mp_unsigned_bin_size(&key->e);
if ((word32)sz > *nSz)
return RSA_BUFFER_E;
ret = mp_to_unsigned_bin(&key->e, e);
if (ret != MP_OKAY)
return ret;
*eSz = (word32)sz;
sz = mp_unsigned_bin_size(&key->n);
if ((word32)sz > *nSz)
return RSA_BUFFER_E;
ret = mp_to_unsigned_bin(&key->n, n);
if (ret != MP_OKAY)
return ret;
*nSz = (word32)sz;
return 0;
}
#ifdef WOLFSSL_KEY_GEN
/* Make an RSA key for size bits, with e specified, 65537 is a good e */
int wc_MakeRsaKey(RsaKey* key, int size, long e, WC_RNG* rng)
{
mp_int p, q, tmp1, tmp2, tmp3;
int err;
if (key == NULL || rng == NULL)
return BAD_FUNC_ARG;
if (size < RSA_MIN_SIZE || size > RSA_MAX_SIZE)
return BAD_FUNC_ARG;
if (e < 3 || (e & 1) == 0)
return BAD_FUNC_ARG;
if ((err = mp_init_multi(&p, &q, &tmp1, &tmp2, &tmp3, NULL)) != MP_OKAY)
return err;
err = mp_set_int(&tmp3, e);
/* make p */
if (err == MP_OKAY) {
do {
err = mp_rand_prime(&p, size/16, rng, key->heap); /* size in bytes/2 */
if (err == MP_OKAY)
err = mp_sub_d(&p, 1, &tmp1); /* tmp1 = p-1 */
if (err == MP_OKAY)
err = mp_gcd(&tmp1, &tmp3, &tmp2); /* tmp2 = gcd(p-1, e) */
} while (err == MP_OKAY && mp_cmp_d(&tmp2, 1) != 0); /* e divides p-1 */
}
/* make q */
if (err == MP_OKAY) {
do {
err = mp_rand_prime(&q, size/16, rng, key->heap); /* size in bytes/2 */
if (err == MP_OKAY)
err = mp_sub_d(&q, 1, &tmp1); /* tmp1 = q-1 */
if (err == MP_OKAY)
err = mp_gcd(&tmp1, &tmp3, &tmp2); /* tmp2 = gcd(q-1, e) */
} while (err == MP_OKAY && mp_cmp_d(&tmp2, 1) != 0); /* e divides q-1 */
}
if (err == MP_OKAY)
err = mp_init_multi(&key->n, &key->e, &key->d, &key->p, &key->q, NULL);
if (err == MP_OKAY)
err = mp_init_multi(&key->dP, &key->dQ, &key->u, NULL, NULL, NULL);
if (err == MP_OKAY)
err = mp_sub_d(&p, 1, &tmp2); /* tmp2 = p-1 */
if (err == MP_OKAY)
err = mp_lcm(&tmp1, &tmp2, &tmp1); /* tmp1 = lcm(p-1, q-1),last loop */
/* make key */
if (err == MP_OKAY)
err = mp_set_int(&key->e, e); /* key->e = e */
if (err == MP_OKAY) /* key->d = 1/e mod lcm(p-1, q-1) */
err = mp_invmod(&key->e, &tmp1, &key->d);
if (err == MP_OKAY)
err = mp_mul(&p, &q, &key->n); /* key->n = pq */
if (err == MP_OKAY)
err = mp_sub_d(&p, 1, &tmp1);
if (err == MP_OKAY)
err = mp_sub_d(&q, 1, &tmp2);
if (err == MP_OKAY)
err = mp_mod(&key->d, &tmp1, &key->dP);
if (err == MP_OKAY)
err = mp_mod(&key->d, &tmp2, &key->dQ);
if (err == MP_OKAY)
err = mp_invmod(&q, &p, &key->u);
if (err == MP_OKAY)
err = mp_copy(&p, &key->p);
if (err == MP_OKAY)
err = mp_copy(&q, &key->q);
if (err == MP_OKAY)
key->type = RSA_PRIVATE;
mp_clear(&tmp3);
mp_clear(&tmp2);
mp_clear(&tmp1);
mp_clear(&q);
mp_clear(&p);
if (err != MP_OKAY) {
wc_FreeRsaKey(key);
return err;
}
return 0;
}
#endif /* WOLFSSL_KEY_GEN */
#ifdef HAVE_CAVIUM
#include <wolfssl/wolfcrypt/logging.h>
#include "cavium_common.h"
/* Initialize RSA for use with Nitrox device */
int wc_RsaInitCavium(RsaKey* rsa, int devId)
{
if (rsa == NULL)
return -1;
if (CspAllocContext(CONTEXT_SSL, &rsa->contextHandle, devId) != 0)
return -1;
rsa->devId = devId;
rsa->magic = WOLFSSL_RSA_CAVIUM_MAGIC;
return 0;
}
/* Free RSA from use with Nitrox device */
void wc_RsaFreeCavium(RsaKey* rsa)
{
if (rsa == NULL)
return;
CspFreeContext(CONTEXT_SSL, rsa->contextHandle, rsa->devId);
rsa->magic = 0;
}
/* Initialize cavium RSA key */
static int InitCaviumRsaKey(RsaKey* key, void* heap)
{
if (key == NULL)
return BAD_FUNC_ARG;
key->heap = heap;
key->type = -1; /* don't know yet */
key->c_n = NULL;
key->c_e = NULL;
key->c_d = NULL;
key->c_p = NULL;
key->c_q = NULL;
key->c_dP = NULL;
key->c_dQ = NULL;
key->c_u = NULL;
key->c_nSz = 0;
key->c_eSz = 0;
key->c_dSz = 0;
key->c_pSz = 0;
key->c_qSz = 0;
key->c_dP_Sz = 0;
key->c_dQ_Sz = 0;
key->c_uSz = 0;
return 0;
}
/* Free cavium RSA key */
static int FreeCaviumRsaKey(RsaKey* key)
{
if (key == NULL)
return BAD_FUNC_ARG;
XFREE(key->c_n, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_e, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_d, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_p, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_q, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_dP, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_dQ, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
XFREE(key->c_u, key->heap, DYNAMIC_TYPE_CAVIUM_TMP);
return InitCaviumRsaKey(key, key->heap); /* reset pointers */
}
static int CaviumRsaPublicEncrypt(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key)
{
word32 requestId;
word32 ret;
if (key == NULL || in == NULL || out == NULL || outLen < (word32)key->c_nSz)
return -1;
ret = CspPkcs1v15Enc(CAVIUM_BLOCKING, BT2, key->c_nSz, key->c_eSz,
(word16)inLen, key->c_n, key->c_e, (byte*)in, out,
&requestId, key->devId);
if (ret != 0) {
WOLFSSL_MSG("Cavium Enc BT2 failed");
return -1;
}
return key->c_nSz;
}
static INLINE void ato16(const byte* c, word16* u16)
{
*u16 = (c[0] << 8) | (c[1]);
}
static int CaviumRsaPrivateDecrypt(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key)
{
word32 requestId;
word32 ret;
word16 outSz = (word16)outLen;
if (key == NULL || in == NULL || out == NULL || inLen != (word32)key->c_nSz)
return -1;
ret = CspPkcs1v15CrtDec(CAVIUM_BLOCKING, BT2, key->c_nSz, key->c_q,
key->c_dQ, key->c_p, key->c_dP, key->c_u,
(byte*)in, &outSz, out, &requestId, key->devId);
if (ret != 0) {
WOLFSSL_MSG("Cavium CRT Dec BT2 failed");
return -1;
}
ato16((const byte*)&outSz, &outSz);
return outSz;
}
static int CaviumRsaSSL_Sign(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key)
{
word32 requestId;
word32 ret;
if (key == NULL || in == NULL || out == NULL || inLen == 0 || outLen <
(word32)key->c_nSz)
return -1;
ret = CspPkcs1v15CrtEnc(CAVIUM_BLOCKING, BT1, key->c_nSz, (word16)inLen,
key->c_q, key->c_dQ, key->c_p, key->c_dP, key->c_u,
(byte*)in, out, &requestId, key->devId);
if (ret != 0) {
WOLFSSL_MSG("Cavium CRT Enc BT1 failed");
return -1;
}
return key->c_nSz;
}
static int CaviumRsaSSL_Verify(const byte* in, word32 inLen, byte* out,
word32 outLen, RsaKey* key)
{
word32 requestId;
word32 ret;
word16 outSz = (word16)outLen;
if (key == NULL || in == NULL || out == NULL || inLen != (word32)key->c_nSz)
return -1;
ret = CspPkcs1v15Dec(CAVIUM_BLOCKING, BT1, key->c_nSz, key->c_eSz,
key->c_n, key->c_e, (byte*)in, &outSz, out,
&requestId, key->devId);
if (ret != 0) {
WOLFSSL_MSG("Cavium Dec BT1 failed");
return -1;
}
outSz = ntohs(outSz);
return outSz;
}
#endif /* HAVE_CAVIUM */
#endif /* HAVE_FIPS */
#endif /* NO_RSA */
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