32 lines
935 B
C
32 lines
935 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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#ifdef LTC_RC4_STREAM
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/**
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Encrypt (or decrypt) bytes of ciphertext (or plaintext) with RC4
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@param key The key
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@param keylen The key length
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@param datain The plaintext (or ciphertext)
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@param datalen The length of the input and output (octets)
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@param dataout [out] The ciphertext (or plaintext)
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@return CRYPT_OK if successful
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*/
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int rc4_stream_memory(const unsigned char *key, unsigned long keylen,
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const unsigned char *datain, unsigned long datalen,
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unsigned char *dataout)
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{
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rc4_state st;
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int err;
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if ((err = rc4_stream_setup(&st, key, keylen)) != CRYPT_OK) goto WIPE_KEY;
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err = rc4_stream_crypt(&st, datain, datalen, dataout);
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WIPE_KEY:
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rc4_stream_done(&st);
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return err;
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}
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#endif /* LTC_RC4_STREAM */
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