src/usr.bin/ssh/cipher.c - diff

Return to cipher.c CVS log

Up to [local] / src / usr.bin / ssh

version 1.82, 2009/01/26 09:58:15

version 1.83, 2012/12/11 22:31:18

Line 253

}

* cipher_crypt() operates as following:

* Copy 'aadlen' bytes (without en/decryption) from 'src' to 'dest'.

* Theses bytes are treated as additional authenticated data for

* authenticated encryption modes.

* En/Decrypt 'len' bytes at offset 'aadlen' from 'src' to 'dest'.

* Both 'aadlen' and 'authlen' can be set to 0.

void

cipher_crypt(CipherContext *cc, u_char *dest, const u_char *src, u_int len)

cipher_crypt(CipherContext *cc, u_char *dest, const u_char *src,

u_int len, u_int aadlen)

{

if (aadlen)

memcpy(dest, src, aadlen);

if (len % cc->cipher->block_size)

fatal("cipher_encrypt: bad plaintext length %d", len);

fatal("%s: bad plaintext length %d", __func__, len);

if (EVP_Cipher(&cc->evp, dest, (u_char *)src, len) == 0)

if (EVP_Cipher(&cc->evp, dest + aadlen, (u_char *)src + aadlen,

fatal("evp_crypt: EVP_Cipher failed");

len) < 0)

fatal("%s: EVP_Cipher failed", __func__);

}

void