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OCBv3: implement RFC7253 compliance

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This fixes #256
This commit is contained in:
Steffen Jaeckel
2017-08-02 17:45:59 +02:00
parent 1aaa5abb33
commit d77cf0e248
8 changed files with 608 additions and 531 deletions
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src/headers/tomcrypt_mac.h
+3 -2
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@@ -271,7 +271,8 @@ typedef struct {
int ocb3_init(ocb3_state *ocb, int cipher,
const unsigned char *key, unsigned long keylen,
const unsigned char *nonce, unsigned long noncelen);
const unsigned char *nonce, unsigned long noncelen,
unsigned long taglen);
int ocb3_encrypt(ocb3_state *ocb, const unsigned char *pt, unsigned long ptlen, unsigned char *ct);
int ocb3_decrypt(ocb3_state *ocb, const unsigned char *ct, unsigned long ctlen, unsigned char *pt);
@@ -302,7 +303,7 @@ int ocb3_test(void);
#ifdef LTC_SOURCE
/* internal helper functions */
int ocb3_int_aad_add_block(ocb3_state *ocb, const unsigned char *aad_block);
void ocb3_int_calc_offset_zero(ocb3_state *ocb, const unsigned char *nonce, unsigned long noncelen);
void ocb3_int_calc_offset_zero(ocb3_state *ocb, const unsigned char *nonce, unsigned long noncelen, unsigned long taglen);
int ocb3_int_ntz(unsigned long x);
void ocb3_int_xor_blocks(unsigned char *out, const unsigned char *block_a, const unsigned char *block_b, unsigned long block_len);
#endif /* LTC_SOURCE */