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Merge pull request #7053 from douzzer/20231208-asn-big-short-ints

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20231208-asn-big-short-ints
This commit is contained in:
Sean Parkinson
2023-12-12 13:53:37 +10:00
committed by GitHub
parent 043dde18be c1b5135918
commit 1aed438a21
4 changed files with 66 additions and 74 deletions
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49
wolfcrypt/src/asn.c
View File

@ -315,8 +315,6 @@ static const char* TagString(byte tag)
/* Calculates the minimum number of bytes required to encode the value. /* Calculates the minimum number of bytes required to encode the value.
*
* Only support up to 2^24-1.
* *
* @param [in] value Value to be encoded. * @param [in] value Value to be encoded.
* @return Number of bytes to encode value. * @return Number of bytes to encode value.
@ -324,7 +322,7 @@ static const char* TagString(byte tag)
static word32 BytePrecision(word32 value) static word32 BytePrecision(word32 value)
{ {
word32 i; word32 i;
for (i = (word32)sizeof(value) - 1; i; --i) for (i = (word32)sizeof(value); i; --i)
if (value >> ((i - 1) * WOLFSSL_BIT_SIZE)) if (value >> ((i - 1) * WOLFSSL_BIT_SIZE))
break; break;
@ -3139,46 +3137,35 @@ int GetShortInt(const byte* input, word32* inOutIdx, int* number, word32 maxIdx)
defined(HAVE_PKCS12) defined(HAVE_PKCS12)
/* Set small integer, 32 bits or less. DER encoding with no leading 0s /* Set small integer, 32 bits or less. DER encoding with no leading 0s
* returns total amount written including ASN tag and length byte on success */ * returns total amount written including ASN tag and length byte on success */
int SetShortInt(byte* input, word32* inOutIdx, word32 number, word32 maxIdx) int SetShortInt(byte* output, word32* inOutIdx, word32 number, word32 maxIdx)
{ {
word32 idx = *inOutIdx; word32 idx = *inOutIdx;
int len = 0; word32 len;
int i; int i;
byte ar[MAX_LENGTH_SZ];
/* check for room for type and length bytes */ if (number == 0)
if ((idx + 2) > maxIdx) len = 1;
else
len = BytePrecision(number);
/* check for room for type and length bytes. */
if ((idx + 2 + len) > maxIdx)
return BUFFER_E; return BUFFER_E;
input[idx++] = ASN_INTEGER; /* check that MAX_SHORT_SZ allows this size of ShortInt. */
idx++; /* place holder for length byte */ if (2 + len > MAX_SHORT_SZ)
if (MAX_LENGTH_SZ + idx > maxIdx)
return ASN_PARSE_E; return ASN_PARSE_E;
/* find first non zero byte */ output[idx++] = ASN_INTEGER;
XMEMSET(ar, 0, MAX_LENGTH_SZ); output[idx++] = (byte)len;
c32toa(number, ar);
for (i = 0; i < MAX_LENGTH_SZ; i++) {
if (ar[i] != 0) {
break;
}
}
/* handle case of 0 */ for (i = (int)len - 1; i >= 0; --i)
if (i == MAX_LENGTH_SZ) { output[idx++] = (byte)(number >> (i * WOLFSSL_BIT_SIZE));
input[idx++] = 0; len++;
}
for (; i < MAX_LENGTH_SZ && idx < maxIdx; i++) { len = idx - *inOutIdx;
input[idx++] = ar[i]; len++;
}
/* jump back to beginning of input buffer using unaltered inOutIdx value
* and set number of bytes for integer, then update the index value */
input[*inOutIdx + 1] = (byte)len;
*inOutIdx = idx; *inOutIdx = idx;
return len + 2; /* size of integer bytes plus ASN TAG and length byte */ return (int)len;
} }
#endif /* !WOLFSSL_ASN_TEMPLATE || HAVE_PKCS8 || HAVE_PKCS12 */ #endif /* !WOLFSSL_ASN_TEMPLATE || HAVE_PKCS8 || HAVE_PKCS12 */
#endif /* !NO_PWDBASED */ #endif /* !NO_PWDBASED */

50
wolfcrypt/src/evp.c
View File

@ -146,14 +146,16 @@ static const struct s_ent {
#endif #endif
#endif /* WOLFSSL_AES_OFB */ #endif /* WOLFSSL_AES_OFB */
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
static const char EVP_AES_128_XTS[] = "AES-128-XTS"; static const char EVP_AES_128_XTS[] = "AES-128-XTS";
#endif #endif
#ifdef WOLFSSL_AES_256 #ifdef WOLFSSL_AES_256
static const char EVP_AES_256_XTS[] = "AES-256-XTS"; static const char EVP_AES_256_XTS[] = "AES-256-XTS";
#endif #endif
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS &&
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) */
#ifdef WOLFSSL_AES_CFB #ifdef WOLFSSL_AES_CFB
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
@ -330,7 +332,7 @@ int wolfSSL_EVP_Cipher_key_length(const WOLFSSL_EVP_CIPHER* c)
case AES_192_OFB_TYPE: return 24; case AES_192_OFB_TYPE: return 24;
case AES_256_OFB_TYPE: return 32; case AES_256_OFB_TYPE: return 32;
#endif #endif
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
/* Two keys for XTS. */ /* Two keys for XTS. */
case AES_128_XTS_TYPE: return 16 * 2; case AES_128_XTS_TYPE: return 16 * 2;
case AES_256_XTS_TYPE: return 32 * 2; case AES_256_XTS_TYPE: return 32 * 2;
@ -632,7 +634,7 @@ static int evpCipherBlock(WOLFSSL_EVP_CIPHER_CTX *ctx,
ret = wc_AesCfbDecrypt(&ctx->cipher.aes, out, in, inl); ret = wc_AesCfbDecrypt(&ctx->cipher.aes, out, in, inl);
break; break;
#endif #endif
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
if (ctx->enc) if (ctx->enc)
@ -1703,7 +1705,7 @@ int wolfSSL_EVP_CIPHER_CTX_block_size(const WOLFSSL_EVP_CIPHER_CTX *ctx)
case AES_192_OFB_TYPE: case AES_192_OFB_TYPE:
case AES_256_OFB_TYPE: case AES_256_OFB_TYPE:
#endif #endif
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
#endif #endif
@ -1831,7 +1833,7 @@ static unsigned int cipherType(const WOLFSSL_EVP_CIPHER *cipher)
return AES_256_ECB_TYPE; return AES_256_ECB_TYPE;
#endif #endif
#endif /*HAVE_AES_CBC */ #endif /*HAVE_AES_CBC */
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
else if (EVP_CIPHER_TYPE_MATCHES(cipher, EVP_AES_128_XTS)) else if (EVP_CIPHER_TYPE_MATCHES(cipher, EVP_AES_128_XTS))
return AES_128_XTS_TYPE; return AES_128_XTS_TYPE;
@ -1997,7 +1999,8 @@ int wolfSSL_EVP_CIPHER_block_size(const WOLFSSL_EVP_CIPHER *cipher)
case AES_256_OFB_TYPE: case AES_256_OFB_TYPE:
return 1; return 1;
#endif #endif
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
return 1; return 1;
@ -2106,7 +2109,8 @@ unsigned long WOLFSSL_CIPHER_mode(const WOLFSSL_EVP_CIPHER *cipher)
case AES_256_OFB_TYPE: case AES_256_OFB_TYPE:
return WOLFSSL_EVP_CIPH_OFB_MODE; return WOLFSSL_EVP_CIPH_OFB_MODE;
#endif #endif
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
return WOLFSSL_EVP_CIPH_XTS_MODE; return WOLFSSL_EVP_CIPH_XTS_MODE;
@ -4852,7 +4856,8 @@ static const struct cipher{
#endif #endif
#endif #endif
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
{AES_128_XTS_TYPE, EVP_AES_128_XTS, NID_aes_128_xts}, {AES_128_XTS_TYPE, EVP_AES_128_XTS, NID_aes_128_xts},
#endif #endif
@ -5565,7 +5570,8 @@ void wolfSSL_EVP_init(void)
#endif /* WOLFSSL_AES_256 */ #endif /* WOLFSSL_AES_256 */
#endif /* WOLFSSL_AES_OFB */ #endif /* WOLFSSL_AES_OFB */
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
const WOLFSSL_EVP_CIPHER* wolfSSL_EVP_aes_128_xts(void) const WOLFSSL_EVP_CIPHER* wolfSSL_EVP_aes_128_xts(void)
{ {
@ -5581,7 +5587,8 @@ void wolfSSL_EVP_init(void)
return EVP_AES_256_XTS; return EVP_AES_256_XTS;
} }
#endif /* WOLFSSL_AES_256 */ #endif /* WOLFSSL_AES_256 */
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS &&
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) */
#ifdef HAVE_AESGCM #ifdef HAVE_AESGCM
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
@ -6135,7 +6142,8 @@ void wolfSSL_EVP_init(void)
wc_AesFree(&ctx->cipher.aes); wc_AesFree(&ctx->cipher.aes);
ctx->flags &= ~WOLFSSL_EVP_CIPH_LOW_LEVEL_INITED; ctx->flags &= ~WOLFSSL_EVP_CIPH_LOW_LEVEL_INITED;
break; break;
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
wc_AesXtsFree(&ctx->cipher.xts); wc_AesXtsFree(&ctx->cipher.xts);
@ -7465,7 +7473,8 @@ void wolfSSL_EVP_init(void)
} }
#endif /* WOLFSSL_AES_256 */ #endif /* WOLFSSL_AES_256 */
#endif /* WOLFSSL_AES_OFB */ #endif /* WOLFSSL_AES_OFB */
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
if (ctx->cipherType == AES_128_XTS_TYPE || if (ctx->cipherType == AES_128_XTS_TYPE ||
(type && EVP_CIPHER_TYPE_MATCHES(type, EVP_AES_128_XTS))) { (type && EVP_CIPHER_TYPE_MATCHES(type, EVP_AES_128_XTS))) {
@ -7548,7 +7557,8 @@ void wolfSSL_EVP_init(void)
} }
} }
#endif /* WOLFSSL_AES_256 */ #endif /* WOLFSSL_AES_256 */
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS &&
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) */
#endif /* NO_AES */ #endif /* NO_AES */
#if defined(HAVE_ARIA) #if defined(HAVE_ARIA)
if (ctx->cipherType == ARIA_128_GCM_TYPE || if (ctx->cipherType == ARIA_128_GCM_TYPE ||
@ -8210,7 +8220,7 @@ void wolfSSL_EVP_init(void)
ret = (int)len; ret = (int)len;
break; break;
#endif /* WOLFSSL_AES_OFB */ #endif /* WOLFSSL_AES_OFB */
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
WOLFSSL_MSG("AES XTS"); WOLFSSL_MSG("AES XTS");
@ -8223,7 +8233,7 @@ void wolfSSL_EVP_init(void)
if (ret == 0) if (ret == 0)
ret = (int)len; ret = (int)len;
break; break;
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) */
#if defined(HAVE_AESGCM) && ((!defined(HAVE_FIPS) && !defined(HAVE_SELFTEST)) \ #if defined(HAVE_AESGCM) && ((!defined(HAVE_FIPS) && !defined(HAVE_SELFTEST)) \
|| FIPS_VERSION_GE(2,0)) || FIPS_VERSION_GE(2,0))
@ -9309,12 +9319,12 @@ int wolfSSL_EVP_CIPHER_CTX_iv_length(const WOLFSSL_EVP_CIPHER_CTX* ctx)
WOLFSSL_MSG("AES OFB"); WOLFSSL_MSG("AES OFB");
return AES_BLOCK_SIZE; return AES_BLOCK_SIZE;
#endif /* WOLFSSL_AES_OFB */ #endif /* WOLFSSL_AES_OFB */
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
case AES_128_XTS_TYPE: case AES_128_XTS_TYPE:
case AES_256_XTS_TYPE: case AES_256_XTS_TYPE:
WOLFSSL_MSG("AES XTS"); WOLFSSL_MSG("AES XTS");
return AES_BLOCK_SIZE; return AES_BLOCK_SIZE;
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) */
#ifdef HAVE_ARIA #ifdef HAVE_ARIA
case ARIA_128_GCM_TYPE : case ARIA_128_GCM_TYPE :
case ARIA_192_GCM_TYPE : case ARIA_192_GCM_TYPE :
@ -9438,7 +9448,7 @@ int wolfSSL_EVP_CIPHER_iv_length(const WOLFSSL_EVP_CIPHER* cipher)
return AES_BLOCK_SIZE; return AES_BLOCK_SIZE;
#endif #endif
#endif #endif
#ifdef WOLFSSL_AES_XTS #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
if (XSTRCMP(name, EVP_AES_128_XTS) == 0) if (XSTRCMP(name, EVP_AES_128_XTS) == 0)
return AES_BLOCK_SIZE; return AES_BLOCK_SIZE;
@ -9448,7 +9458,7 @@ int wolfSSL_EVP_CIPHER_iv_length(const WOLFSSL_EVP_CIPHER* cipher)
if (XSTRCMP(name, EVP_AES_256_XTS) == 0) if (XSTRCMP(name, EVP_AES_256_XTS) == 0)
return AES_BLOCK_SIZE; return AES_BLOCK_SIZE;
#endif /* WOLFSSL_AES_256 */ #endif /* WOLFSSL_AES_256 */
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) */
#endif #endif
#ifdef HAVE_ARIA #ifdef HAVE_ARIA

17
wolfcrypt/test/test.c
View File

@ -9358,7 +9358,8 @@ static wc_test_ret_t aes_key_size_test(void)
return ret; return ret;
} }
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
/* test vectors from http://csrc.nist.gov/groups/STM/cavp/block-cipher-modes.html */ /* test vectors from http://csrc.nist.gov/groups/STM/cavp/block-cipher-modes.html */
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
static wc_test_ret_t aes_xts_128_test(void) static wc_test_ret_t aes_xts_128_test(void)
@ -9435,8 +9436,6 @@ static wc_test_ret_t aes_xts_128_test(void)
0x77, 0x8a, 0xe8, 0xb4, 0x3c, 0xb9, 0x8d, 0x5a 0x77, 0x8a, 0xe8, 0xb4, 0x3c, 0xb9, 0x8d, 0x5a
}; };
#if !defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)
WOLFSSL_SMALL_STACK_STATIC unsigned char k3[] = { WOLFSSL_SMALL_STACK_STATIC unsigned char k3[] = {
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
@ -9462,8 +9461,6 @@ static wc_test_ret_t aes_xts_128_test(void)
0xB5, 0x5A, 0xDD, 0xCB, 0x80, 0xE0, 0xFC, 0xCD 0xB5, 0x5A, 0xDD, 0xCB, 0x80, 0xE0, 0xFC, 0xCD
}; };
#endif /* !HAVE_FIPS || FIPS_VERSION_GE(5,3) */
#if defined(WOLFSSL_SMALL_STACK) && !defined(WOLFSSL_NO_MALLOC) #if defined(WOLFSSL_SMALL_STACK) && !defined(WOLFSSL_NO_MALLOC)
if ((aes = (XtsAes *)XMALLOC(sizeof *aes, HEAP_HINT, DYNAMIC_TYPE_AES)) == NULL) if ((aes = (XtsAes *)XMALLOC(sizeof *aes, HEAP_HINT, DYNAMIC_TYPE_AES)) == NULL)
ERROR_OUT(WC_TEST_RET_ENC_ERRNO, out); ERROR_OUT(WC_TEST_RET_ENC_ERRNO, out);
@ -9641,8 +9638,6 @@ static wc_test_ret_t aes_xts_128_test(void)
if (XMEMCMP(p2, buf, sizeof(p2))) if (XMEMCMP(p2, buf, sizeof(p2)))
ERROR_OUT(WC_TEST_RET_ENC_NC, out); ERROR_OUT(WC_TEST_RET_ENC_NC, out);
#if !defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)
/* Test ciphertext stealing in-place. */ /* Test ciphertext stealing in-place. */
XMEMCPY(buf, p3, sizeof(p3)); XMEMCPY(buf, p3, sizeof(p3));
ret = wc_AesXtsSetKeyNoInit(aes, k3, sizeof(k3), AES_ENCRYPTION); ret = wc_AesXtsSetKeyNoInit(aes, k3, sizeof(k3), AES_ENCRYPTION);
@ -9670,10 +9665,7 @@ static wc_test_ret_t aes_xts_128_test(void)
if (XMEMCMP(p3, buf, sizeof(p3))) if (XMEMCMP(p3, buf, sizeof(p3)))
ERROR_OUT(WC_TEST_RET_ENC_NC, out); ERROR_OUT(WC_TEST_RET_ENC_NC, out);
#endif /* !HAVE_FIPS || FIPS_VERSION_GE(5,3) */
#if !defined(BENCH_EMBEDDED) && !defined(HAVE_CAVIUM) && \ #if !defined(BENCH_EMBEDDED) && !defined(HAVE_CAVIUM) && \
(!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3)) && \
!defined(WOLFSSL_AFALG) !defined(WOLFSSL_AFALG)
{ {
#define LARGE_XTS_SZ 1024 #define LARGE_XTS_SZ 1024
@ -9726,7 +9718,6 @@ static wc_test_ret_t aes_xts_128_test(void)
#endif #endif
} }
#endif /* !BENCH_EMBEDDED && !HAVE_CAVIUM && #endif /* !BENCH_EMBEDDED && !HAVE_CAVIUM &&
* (!HAVE_FIPS || FIPS_VERSION_GE(5,3)) &&
* !WOLFSSL_AFALG * !WOLFSSL_AFALG
*/ */
@ -10332,7 +10323,7 @@ static wc_test_ret_t aes_xts_args_test(void)
return ret; return ret;
} }
#endif /* WOLFSSL_AES_128 */ #endif /* WOLFSSL_AES_128 */
#endif /* WOLFSSL_AES_XTS */ #endif /* WOLFSSL_AES_XTS && (!HAVE_FIPS || FIPS_VERSION_GE(5,3)) */
#if defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_128) #if defined(HAVE_AES_CBC) && defined(WOLFSSL_AES_128)
static wc_test_ret_t aes_cbc_test(void) static wc_test_ret_t aes_cbc_test(void)
@ -11706,7 +11697,7 @@ WOLFSSL_TEST_SUBROUTINE wc_test_ret_t aes_test(void)
goto out; goto out;
#endif #endif
#if defined(WOLFSSL_AES_XTS) #if defined(WOLFSSL_AES_XTS) && (!defined(HAVE_FIPS) || FIPS_VERSION_GE(5,3))
#ifdef WOLFSSL_AES_128 #ifdef WOLFSSL_AES_128
ret = aes_xts_128_test(); ret = aes_xts_128_test();
if (ret != 0) if (ret != 0)

24
wolfssl/wolfcrypt/asn.h
View File

@ -901,6 +901,10 @@ enum ECC_TYPES
/* Maximum OID dotted form size. */ /* Maximum OID dotted form size. */
#define ASN1_OID_DOTTED_MAX_SZ 16 #define ASN1_OID_DOTTED_MAX_SZ 16
#ifndef WOLFSSL_ASN_MAX_LENGTH_SZ
#define WOLFSSL_ASN_MAX_LENGTH_SZ 5 /* 1 byte length + 4 bytes of number */
#endif
enum Misc_ASN { enum Misc_ASN {
MAX_SALT_SIZE = 64, /* MAX PKCS Salt length */ MAX_SALT_SIZE = 64, /* MAX PKCS Salt length */
MAX_IV_SIZE = 64, /* MAX PKCS Iv length */ MAX_IV_SIZE = 64, /* MAX PKCS Iv length */
@ -943,18 +947,18 @@ enum Misc_ASN {
#endif #endif
MAX_SIG_SZ = 256, MAX_SIG_SZ = 256,
MAX_ALGO_SZ = 20, MAX_ALGO_SZ = 20,
MAX_SHORT_SZ = 6, /* asn int + byte len + 4 byte length */ MAX_LENGTH_SZ = WOLFSSL_ASN_MAX_LENGTH_SZ, /* Max length size for DER encoding */
MAX_LENGTH_SZ = 4, /* Max length size for DER encoding */ MAX_SHORT_SZ = (1 + MAX_LENGTH_SZ), /* asn int + byte len + 4 byte length */
MAX_SEQ_SZ = 5, /* enum(seq | con) + length(4) */ MAX_SEQ_SZ = (1 + MAX_LENGTH_SZ), /* enum(seq | con) + length(5) */
MAX_SET_SZ = 5, /* enum(set | con) + length(4) */ MAX_SET_SZ = (1 + MAX_LENGTH_SZ), /* enum(set | con) + length(5) */
MAX_OCTET_STR_SZ = 5, /* enum(set | con) + length(4) */ MAX_OCTET_STR_SZ = (1 + MAX_LENGTH_SZ), /* enum(set | con) + length(5) */
MAX_EXP_SZ = 5, /* enum(contextspec|con|exp) + length(4) */ MAX_EXP_SZ = (1 + MAX_LENGTH_SZ), /* enum(contextspec|con|exp) + length(5) */
MAX_PRSTR_SZ = 5, /* enum(prstr) + length(4) */ MAX_PRSTR_SZ = (1 + MAX_LENGTH_SZ), /* enum(prstr) + length(5) */
MAX_VERSION_SZ = 5, /* enum + id + version(byte) + (header(2))*/ MAX_VERSION_SZ = 5, /* enum + id + version(byte) + (header(2))*/
MAX_ENCODED_DIG_ASN_SZ= 9, /* enum(bit or octet) + length(4) */ MAX_ENCODED_DIG_ASN_SZ = (5 + MAX_LENGTH_SZ), /* enum(bit or octet) + length(5) */
MAX_ENCODED_DIG_SZ = 64 + MAX_ENCODED_DIG_ASN_SZ, /* asn header + sha512 */ MAX_ENCODED_DIG_SZ = 64 + MAX_ENCODED_DIG_ASN_SZ, /* asn header + sha512 */
MAX_RSA_INT_SZ = 517, /* RSA raw sz 4096 for bits + tag + len(4) */ MAX_RSA_INT_SZ = (512 + 1 + MAX_LENGTH_SZ), /* RSA raw sz 4096 for bits + tag + len(5) */
MAX_DSA_INT_SZ = 389, /* DSA raw sz 3072 for bits + tag + len(4) */ MAX_DSA_INT_SZ = (384 + 1 + MAX_LENGTH_SZ), /* DSA raw sz 3072 for bits + tag + len(5) */
MAX_DSA_PUBKEY_SZ = (DSA_PUB_INTS * MAX_DSA_INT_SZ) + (2 * MAX_SEQ_SZ) + MAX_DSA_PUBKEY_SZ = (DSA_PUB_INTS * MAX_DSA_INT_SZ) + (2 * MAX_SEQ_SZ) +
2 + MAX_LENGTH_SZ, /* Maximum size of a DSA public 2 + MAX_LENGTH_SZ, /* Maximum size of a DSA public
key taken from wc_SetDsaPublicKey. */ key taken from wc_SetDsaPublicKey. */