ecb.c File Reference

Electronic codebook (ECB). More...

#include <assert.h>
#include <ipxe/crypto.h>
#include <ipxe/ecb.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
int	ecb_setkey (struct cipher_algorithm *cipher, void *ctx, const void *key, size_t keylen)
	Set key.
void	ecb_encrypt (struct cipher_algorithm *cipher, void *ctx, const void *src, void *dst, size_t len)
	Encrypt data.
void	ecb_decrypt (struct cipher_algorithm *cipher, void *ctx, const void *src, void *dst, size_t len)
	Decrypt data.

Detailed Description

Electronic codebook (ECB).

Definition in file ecb.c.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

ecb_setkey()

int ecb_setkey	(	struct cipher_algorithm *	cipher,
		void *	ctx,
		const void *	key,
		size_t	keylen )

Set key.

Parameters

cipher	Cipher algorithm
ctx	Context
key	Key
keylen	Key length

Return values

rc	Return status code

Definition at line 46 of file ecb.c.

                                                  {
        struct cipher_algorithm *raw_cipher = cipher->priv;
 
        return cipher_setkey ( raw_cipher, ctx, key, keylen );
}

References cipher_setkey(), ctx, key, and cipher_algorithm::priv.

ecb_encrypt()

void ecb_encrypt	(	struct cipher_algorithm *	cipher,
		void *	ctx,
		const void *	src,
		void *	dst,
		size_t	len )

Encrypt data.

Parameters

cipher	Cipher algorithm
ctx	Context
src	Data to encrypt
dst	Buffer for encrypted data
len	Length of data

Definition at line 62 of file ecb.c.

                                                            {
        struct cipher_algorithm *raw_cipher = cipher->priv;
        size_t blocksize = raw_cipher->blocksize;
 
        assert ( ( len % blocksize ) == 0 );
 
        while ( len ) {
                cipher_encrypt ( raw_cipher, ctx, src, dst, blocksize );
                dst += blocksize;
                src += blocksize;
                len -= blocksize;
        }
}

References assert, cipher_algorithm::blocksize, cipher_encrypt, ctx, len, cipher_algorithm::priv, and src.

ecb_decrypt()

void ecb_decrypt	(	struct cipher_algorithm *	cipher,
		void *	ctx,
		const void *	src,
		void *	dst,
		size_t	len )

Decrypt data.

Parameters

cipher	Cipher algorithm
ctx	Context
src	Data to decrypt
dst	Buffer for decrypted data
len	Length of data

Definition at line 86 of file ecb.c.

                                                            {
        struct cipher_algorithm *raw_cipher = cipher->priv;
        size_t blocksize = raw_cipher->blocksize;
 
        assert ( ( len % blocksize ) == 0 );
 
        while ( len ) {
                cipher_decrypt ( raw_cipher, ctx, src, dst, blocksize );
                dst += blocksize;
                src += blocksize;
                len -= blocksize;
        }
}

References assert, cipher_algorithm::blocksize, cipher_decrypt, ctx, len, cipher_algorithm::priv, and src.