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CRYPTO_BLKCIPHER_DEC(9) Programming Interface CRYPTO_BLKCIPHER_DEC(9)

NAME

crypto_blkcipher_decrypt - decrypt ciphertext

SYNOPSIS

int crypto_blkcipher_decrypt(struct blkcipher_desc * desc, struct scatterlist * dst, struct scatterlist * src, unsigned int nbytes);

ARGUMENTS

desc
reference to the block cipher handle with meta data

dst

scatter/gather list that is filled by the cipher operation with the plaintext

src

scatter/gather list that holds the ciphertext

nbytes

number of bytes of the ciphertext to decrypt.

DESCRIPTION

Decrypt ciphertext data using the IV set by the caller with a preceding call of crypto_blkcipher_set_iv.

The blkcipher_desc data structure must be filled by the caller as documented for the crypto_blkcipher_encrypt call above.

RETURN

0 if the cipher operation was successful; < 0 if an error occurred

AUTHORS

Stephan Mueller <smueller@chronox.de>
Author.

Marek Vasut <marek@denx.de>

Author.

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.