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Searched refs:ofb (Results 1 – 7 of 7) sorted by relevance

/optee_os-3.20.0/core/lib/libtomcrypt/src/modes/ofb/
A Dofb_encrypt.c20 int ofb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_OFB *ofb) in ofb_encrypt() argument
25 LTC_ARGCHK(ofb != NULL); in ofb_encrypt()
26 if ((err = cipher_is_valid(ofb->cipher)) != CRYPT_OK) { in ofb_encrypt()
31 if (ofb->blocklen < 0 || ofb->blocklen > (int)sizeof(ofb->IV) || in ofb_encrypt()
32 ofb->padlen < 0 || ofb->padlen > (int)sizeof(ofb->IV)) { in ofb_encrypt()
37 if (ofb->padlen == ofb->blocklen) { in ofb_encrypt()
38 …if ((err = cipher_descriptor[ofb->cipher]->ecb_encrypt(ofb->IV, ofb->IV, &ofb->key)) != CRYPT_OK) { in ofb_encrypt()
41 ofb->padlen = 0; in ofb_encrypt()
43 *ct++ = *pt++ ^ ofb->IV[(ofb->padlen)++]; in ofb_encrypt()
A Dofb_setiv.c19 int ofb_setiv(const unsigned char *IV, unsigned long len, symmetric_OFB *ofb) in ofb_setiv() argument
24 LTC_ARGCHK(ofb != NULL); in ofb_setiv()
26 if ((err = cipher_is_valid(ofb->cipher)) != CRYPT_OK) { in ofb_setiv()
30 if (len != (unsigned long)ofb->blocklen) { in ofb_setiv()
35 ofb->padlen = 0; in ofb_setiv()
36 return cipher_descriptor[ofb->cipher]->ecb_encrypt(IV, ofb->IV, &ofb->key); in ofb_setiv()
A Dofb_start.c24 int keylen, int num_rounds, symmetric_OFB *ofb) in ofb_start() argument
30 LTC_ARGCHK(ofb != NULL); in ofb_start()
37 ofb->cipher = cipher; in ofb_start()
38 ofb->blocklen = cipher_descriptor[cipher]->block_length; in ofb_start()
39 for (x = 0; x < ofb->blocklen; x++) { in ofb_start()
40 ofb->IV[x] = IV[x]; in ofb_start()
44 ofb->padlen = ofb->blocklen; in ofb_start()
45 return cipher_descriptor[cipher]->setup(key, keylen, num_rounds, &ofb->key); in ofb_start()
A Dofb_getiv.c19 int ofb_getiv(unsigned char *IV, unsigned long *len, const symmetric_OFB *ofb) in ofb_getiv() argument
23 LTC_ARGCHK(ofb != NULL); in ofb_getiv()
24 if ((unsigned long)ofb->blocklen > *len) { in ofb_getiv()
25 *len = ofb->blocklen; in ofb_getiv()
28 XMEMCPY(IV, ofb->IV, ofb->blocklen); in ofb_getiv()
29 *len = ofb->blocklen; in ofb_getiv()
A Dofb_done.c16 int ofb_done(symmetric_OFB *ofb) in ofb_done() argument
19 LTC_ARGCHK(ofb != NULL); in ofb_done()
21 if ((err = cipher_is_valid(ofb->cipher)) != CRYPT_OK) { in ofb_done()
24 cipher_descriptor[ofb->cipher]->done(&ofb->key); in ofb_done()
A Dofb_decrypt.c20 int ofb_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_OFB *ofb) in ofb_decrypt() argument
24 LTC_ARGCHK(ofb != NULL); in ofb_decrypt()
25 return ofb_encrypt(ct, pt, len, ofb); in ofb_decrypt()
/optee_os-3.20.0/core/lib/libtomcrypt/src/headers/
A Dtomcrypt_cipher.h895 int keylen, int num_rounds, symmetric_OFB *ofb);
896 int ofb_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_OFB *ofb);
897 int ofb_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_OFB *ofb);
898 int ofb_getiv(unsigned char *IV, unsigned long *len, const symmetric_OFB *ofb);
899 int ofb_setiv(const unsigned char *IV, unsigned long len, symmetric_OFB *ofb);
900 int ofb_done(symmetric_OFB *ofb);

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