37 lines
1005 B
C
37 lines
1005 B
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
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/* SPDX-License-Identifier: Unlicense */
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#include "tomcrypt_private.h"
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/**
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@file ecb_start.c
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ECB implementation, start chain, Tom St Denis
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*/
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#ifdef LTC_ECB_MODE
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/**
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Initialize a ECB context
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@param cipher The index of the cipher desired
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@param key The secret key
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@param keylen The length of the secret key (octets)
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@param num_rounds Number of rounds in the cipher desired (0 for default)
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@param ecb The ECB state to initialize
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@return CRYPT_OK if successful
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*/
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int ecb_start(int cipher, const unsigned char *key, int keylen, int num_rounds, symmetric_ECB *ecb)
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{
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int err;
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LTC_ARGCHK(key != NULL);
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LTC_ARGCHK(ecb != NULL);
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if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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return err;
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}
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ecb->cipher = cipher;
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ecb->blocklen = cipher_descriptor[cipher].block_length;
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return cipher_descriptor[cipher].setup(key, keylen, num_rounds, &ecb->key);
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}
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#endif
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