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JacobBarthelmeh
2014-07-17 15:33:48 -06:00
parent b77a1fdbbb
commit 7cb65d8b3d
2 changed files with 54 additions and 56 deletions
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4
cyassl/internal.h
View File

@ -609,9 +609,9 @@ enum {
TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 = 0xbe, TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 = 0xbe,
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256 = 0xc4, TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256 = 0xc4,
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 0x13, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 0x13,
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = 0x14, TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = 0x14,
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 0x15, TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 0x15,
/* Renegotiation Indication Extension Special Suite */ /* Renegotiation Indication Extension Special Suite */
TLS_EMPTY_RENEGOTIATION_INFO_SCSV = 0xff TLS_EMPTY_RENEGOTIATION_INFO_SCSV = 0xff

106
src/internal.c
View File

@ -4751,8 +4751,8 @@ static INLINE void AeadIncrementExpIV(CYASSL* ssl)
} }
} }
#ifdef HAVE_POLY1305
#ifdef HAVE_POLY1305
/*more recent rfc's concatonate input for poly1305 differently*/ /*more recent rfc's concatonate input for poly1305 differently*/
static int Poly1305Tag(CYASSL* ssl, byte* additional, const byte* out, static int Poly1305Tag(CYASSL* ssl, byte* additional, const byte* out,
byte* cipher, word16 sz, byte* tag) byte* cipher, word16 sz, byte* tag)
@ -4780,7 +4780,7 @@ static int Poly1305Tag(CYASSL* ssl, byte* additional, const byte* out,
if ((ret = Poly1305Update(ssl->encrypt.poly1305, out, msglen)) != 0) if ((ret = Poly1305Update(ssl->encrypt.poly1305, out, msglen)) != 0)
return ret; return ret;
/* handle padding for cipher input */ /* handle padding for cipher input to make it 16 bytes long */
if (msglen % 16 != 0) { if (msglen % 16 != 0) {
paddingSz = (16 - (sz - ssl->specs.aead_mac_size) % 16); paddingSz = (16 - (sz - ssl->specs.aead_mac_size) % 16);
if (paddingSz < 0) if (paddingSz < 0)
@ -4800,7 +4800,6 @@ static int Poly1305Tag(CYASSL* ssl, byte* additional, const byte* out,
padding[9] = (msglen >> 8) & 0xff; padding[9] = (msglen >> 8) & 0xff;
padding[10] = (msglen >>16) & 0xff; padding[10] = (msglen >>16) & 0xff;
padding[11] = (msglen >>24) & 0xff; padding[11] = (msglen >>24) & 0xff;
if ((ret = Poly1305Update(ssl->encrypt.poly1305, padding, sizeof(padding))) if ((ret = Poly1305Update(ssl->encrypt.poly1305, padding, sizeof(padding)))
!= 0) != 0)
return ret; return ret;
@ -4812,9 +4811,8 @@ static int Poly1305Tag(CYASSL* ssl, byte* additional, const byte* out,
return ret; return ret;
} }
/**
* Used for the older version of creating AEAD tags with Poly1305 /* Used for the older version of creating AEAD tags with Poly1305 */
*/
static int Poly1305TagOld(CYASSL* ssl, byte* additional, const byte* out, static int Poly1305TagOld(CYASSL* ssl, byte* additional, const byte* out,
byte* cipher, word16 sz, byte* tag) byte* cipher, word16 sz, byte* tag)
{ {
@ -4870,6 +4868,7 @@ static int Poly1305TagOld(CYASSL* ssl, byte* additional, const byte* out,
} }
#endif /*HAVE_POLY1305*/ #endif /*HAVE_POLY1305*/
#ifdef HAVE_CHACHA #ifdef HAVE_CHACHA
static int ChachaAEADEncrypt(CYASSL* ssl, byte* out, const byte* input, static int ChachaAEADEncrypt(CYASSL* ssl, byte* out, const byte* input,
word16 sz) word16 sz)
@ -4906,19 +4905,19 @@ static int ChachaAEADEncrypt(CYASSL* ssl, byte* out, const byte* input,
XMEMCPY(additional + AEAD_TYPE_OFFSET, additionalSrc, 3); XMEMCPY(additional + AEAD_TYPE_OFFSET, additionalSrc, 3);
#ifdef CHACHA_AEAD_TEST #ifdef CHACHA_AEAD_TEST
int i; int i;
printf("Encrypt Additional : "); printf("Encrypt Additional : ");
for (i = 0; i < CHACHA20_BLOCK_SIZE; i++) { for (i = 0; i < CHACHA20_BLOCK_SIZE; i++) {
printf("%02x", additional[i]); printf("%02x", additional[i]);
} }
printf("\n\n"); printf("\n\n");
printf("input before encryption :\n"); printf("input before encryption :\n");
for (i = 0; i < sz; i++) { for (i = 0; i < sz; i++) {
printf("%02x", input[i]); printf("%02x", input[i]);
if ((i + 1) % 16 == 0) if ((i + 1) % 16 == 0)
printf("\n"); printf("\n");
} }
printf("\n"); printf("\n");
#endif #endif
/* set the nonce for chacha and get poly1305 key */ /* set the nonce for chacha and get poly1305 key */
@ -4935,17 +4934,17 @@ static int ChachaAEADEncrypt(CYASSL* ssl, byte* out, const byte* input,
return ret; return ret;
#ifdef HAVE_POLY1305 #ifdef HAVE_POLY1305
/* get the tag : future use of hmac could go here*/ /* get the tag : future use of hmac could go here*/
if (ssl->options.oldPoly == 1) { if (ssl->options.oldPoly == 1) {
if ((ret = Poly1305TagOld(ssl, additional, (const byte* )out, if ((ret = Poly1305TagOld(ssl, additional, (const byte* )out,
cipher, sz, tag)) != 0) cipher, sz, tag)) != 0)
return ret; return ret;
} }
else { else {
if ((ret = Poly1305Tag(ssl, additional, (const byte* )out, if ((ret = Poly1305Tag(ssl, additional, (const byte* )out,
cipher, sz, tag)) != 0) cipher, sz, tag)) != 0)
return ret; return ret;
} }
#endif #endif
/* append tag to ciphertext */ /* append tag to ciphertext */
@ -4954,7 +4953,7 @@ static int ChachaAEADEncrypt(CYASSL* ssl, byte* out, const byte* input,
AeadIncrementExpIV(ssl); AeadIncrementExpIV(ssl);
XMEMSET(nonce, 0, AEAD_NONCE_SZ); XMEMSET(nonce, 0, AEAD_NONCE_SZ);
#ifdef CHACHA_AEAD_TEST #ifdef CHACHA_AEAD_TEST
printf("mac tag :\n"); printf("mac tag :\n");
for (i = 0; i < 16; i++) { for (i = 0; i < 16; i++) {
printf("%02x", tag[i]); printf("%02x", tag[i]);
@ -4973,6 +4972,7 @@ static int ChachaAEADEncrypt(CYASSL* ssl, byte* out, const byte* input,
return ret; return ret;
} }
static int ChachaAEADDecrypt(CYASSL* ssl, byte* plain, const byte* input, static int ChachaAEADDecrypt(CYASSL* ssl, byte* plain, const byte* input,
word16 sz) word16 sz)
{ {
@ -4980,7 +4980,7 @@ static int ChachaAEADDecrypt(CYASSL* ssl, byte* plain, const byte* input,
byte nonce[AEAD_NONCE_SZ]; byte nonce[AEAD_NONCE_SZ];
byte tag[ssl->specs.aead_mac_size]; byte tag[ssl->specs.aead_mac_size];
byte cipher[32]; /* generated key for mac */ byte cipher[32]; /* generated key for mac */
int i; int i;
int ret = 0; int ret = 0;
XMEMSET(tag, 0, sizeof(tag)); XMEMSET(tag, 0, sizeof(tag));
@ -4988,7 +4988,7 @@ static int ChachaAEADDecrypt(CYASSL* ssl, byte* plain, const byte* input,
XMEMSET(nonce, 0, AEAD_NONCE_SZ); XMEMSET(nonce, 0, AEAD_NONCE_SZ);
XMEMSET(additional, 0, CHACHA20_BLOCK_SIZE); XMEMSET(additional, 0, CHACHA20_BLOCK_SIZE);
#ifdef CHACHA_AEAD_TEST #ifdef CHACHA_AEAD_TEST
printf("input before decrypt :\n"); printf("input before decrypt :\n");
for (i = 0; i < sz; i++) { for (i = 0; i < sz; i++) {
printf("%02x", input[i]); printf("%02x", input[i]);
@ -5015,36 +5015,35 @@ static int ChachaAEADDecrypt(CYASSL* ssl, byte* plain, const byte* input,
if (ssl->options.dtls) if (ssl->options.dtls)
c16toa(ssl->keys.dtls_state.curEpoch, additional); c16toa(ssl->keys.dtls_state.curEpoch, additional);
#endif #endif
#ifdef CHACHA_AEAD_TEST #ifdef CHACHA_AEAD_TEST
printf("Decrypt Additional : "); printf("Decrypt Additional : ");
for (i = 0; i < CHACHA20_BLOCK_SIZE; i++) { for (i = 0; i < CHACHA20_BLOCK_SIZE; i++) {
printf("%02x", additional[i]); printf("%02x", additional[i]);
} }
printf("\n\n"); printf("\n\n");
#endif #endif
/* set nonce and get poly1305 key */ /* set nonce and get poly1305 key */
if ((ret = Chacha_SetIV(ssl->decrypt.chacha, nonce, 0)) != 0) if ((ret = Chacha_SetIV(ssl->decrypt.chacha, nonce, 0)) != 0)
return ret; return ret;
if ((ret = Chacha_Process(ssl->decrypt.chacha, cipher, if ((ret = Chacha_Process(ssl->decrypt.chacha, cipher,
cipher, sizeof(cipher))) != 0) cipher, sizeof(cipher))) != 0)
return ret; return ret;
#ifdef HAVE_POLY1305 #ifdef HAVE_POLY1305
/* get the tag : future use of hmac could go here*/ /* get the tag : future use of hmac could go here*/
if (ssl->options.oldPoly == 1) { if (ssl->options.oldPoly == 1) {
if ((ret = Poly1305TagOld(ssl, additional, input, cipher, if ((ret = Poly1305TagOld(ssl, additional, input, cipher,
sz, tag)) != 0) sz, tag)) != 0)
return ret; return ret;
} }
else { else {
if ((ret = Poly1305Tag(ssl, additional, input, cipher, if ((ret = Poly1305Tag(ssl, additional, input, cipher,
sz, tag)) != 0) sz, tag)) != 0)
return ret; return ret;
} }
#endif #endif
/* check mac sent along with packet */ /* check mac sent along with packet */
@ -5065,8 +5064,7 @@ static int ChachaAEADDecrypt(CYASSL* ssl, byte* plain, const byte* input,
if ((ret = Chacha_Process(ssl->decrypt.chacha, plain, input, if ((ret = Chacha_Process(ssl->decrypt.chacha, plain, input,
sz - ssl->specs.aead_mac_size)) != 0) sz - ssl->specs.aead_mac_size)) != 0)
return ret; return ret;
#ifdef CHACHA_AEAD_TEST #ifdef CHACHA_AEAD_TEST
printf("plain after decrypt :\n"); printf("plain after decrypt :\n");
for (i = 0; i < sz; i++) { for (i = 0; i < sz; i++) {