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cipher reorganisiert

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This commit is contained in:
Werner Koch 1998-04-07 18:16:10 +00:00
parent 53a578711f
commit 86f261dbc5
36 changed files with 760 additions and 939 deletions
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37
g10/cipher.c
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@ -67,42 +67,21 @@ cipher_filter( void *opaque, int control,
randomize_buffer( temp, 8, 1 );
temp[8] = temp[6];
temp[9] = temp[7];
if( cfx->dek->algo == CIPHER_ALGO_BLOWFISH
|| cfx->dek->algo == CIPHER_ALGO_BLOWFISH128 ) {
cfx->bf_ctx = m_alloc_secure( sizeof *cfx->bf_ctx );
blowfish_setkey( cfx->bf_ctx, cfx->dek->key, cfx->dek->keylen );
blowfish_setiv( cfx->bf_ctx, NULL );
blowfish_encode_cfb( cfx->bf_ctx, temp, temp, 10);
}
else if( cfx->dek->algo == CIPHER_ALGO_CAST ) {
cfx->cast5_ctx = m_alloc_secure( sizeof *cfx->cast5_ctx );
cast5_setkey( cfx->cast5_ctx, cfx->dek->key, cfx->dek->keylen );
cast5_setiv( cfx->cast5_ctx, NULL );
cast5_encode_cfb( cfx->cast5_ctx, temp, temp, 10);
cast5_sync_cfb( cfx->cast5_ctx );
}
else
log_bug("no cipher algo %d\n", cfx->dek->algo);
cfx->cipher_hd = cipher_open( cfx->dek->algo,
CIPHER_MODE_AUTO_CFB, 1 );
cipher_setkey( cfx->cipher_hd, cfx->dek->key, cfx->dek->keylen );
cipher_setiv( cfx->cipher_hd, NULL );
cipher_encrypt( cfx->cipher_hd, temp, temp, 10);
cipher_sync( cfx->cipher_hd );
iobuf_write(a, temp, 10);
cfx->header=1;
}
if( cfx->dek->algo == CIPHER_ALGO_BLOWFISH
|| cfx->dek->algo == CIPHER_ALGO_BLOWFISH128 )
blowfish_encode_cfb( cfx->bf_ctx, buf, buf, size);
else if( cfx->dek->algo == CIPHER_ALGO_CAST )
cast5_encode_cfb( cfx->cast5_ctx, buf, buf, size);
cipher_encrypt( cfx->cipher_hd, buf, buf, size);
if( iobuf_write( a, buf, size ) )
rc = G10ERR_WRITE_FILE;
}
else if( control == IOBUFCTRL_FREE ) {
if( cfx->dek->algo == CIPHER_ALGO_BLOWFISH
|| cfx->dek->algo == CIPHER_ALGO_BLOWFISH128 )
m_free(cfx->bf_ctx);
else if( cfx->dek->algo == CIPHER_ALGO_CAST )
m_free(cfx->cast5_ctx);
cipher_close(cfx->cipher_hd);
}
else if( control == IOBUFCTRL_DESC ) {
*(char**)buf = "cipher_filter";