ibrcommon/ibrcommon/ssl/gcm/gcm.cc File Reference

#include "gcm.h"
#include "mode_hdr.h"

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Go to the source code of this file.

Defines
#define	BSP_ENABLED   true
#define	BLOCK_SIZE   GCM_BLOCK_SIZE
#define	BLK_ADR_MASK   (BLOCK_SIZE - 1)
#define	CTR_POS   12
#define	inc_ctr(x)   { int i = BLOCK_SIZE; while(i-- > CTR_POS && !++(ui8_ptr(x)[i])) ; }
#define	gf_mul_hh(a, ctx, scr)   gf_mul_8k(a, ctx->gf_t8k, scr)
Functions
ret_type	gcm_init_and_key (const unsigned char key[], unsigned long key_len, gcm_ctx ctx[1])
ret_type	gcm_init_message (const unsigned char iv[], unsigned long iv_len, gcm_ctx ctx[1])
ret_type	gcm_auth_header (const unsigned char hdr[], unsigned long hdr_len, gcm_ctx ctx[1])
ret_type	gcm_auth_data (const unsigned char data[], unsigned long data_len, gcm_ctx ctx[1])
ret_type	gcm_crypt_data (unsigned char data[], unsigned long data_len, gcm_ctx ctx[1])
ret_type	gcm_compute_tag (unsigned char tag[], unsigned long tag_len, gcm_ctx ctx[1])
ret_type	gcm_end (gcm_ctx ctx[1])
ret_type	gcm_encrypt (unsigned char data[], unsigned long data_len, gcm_ctx ctx[1])
ret_type	gcm_decrypt (unsigned char data[], unsigned long data_len, gcm_ctx ctx[1])
ret_type	gcm_encrypt_message (const unsigned char iv[], unsigned long iv_len, const unsigned char hdr[], unsigned long hdr_len, unsigned char msg[], unsigned long msg_len, unsigned char tag[], unsigned long tag_len, gcm_ctx ctx[1])
ret_type	gcm_decrypt_message (const unsigned char iv[], unsigned long iv_len, const unsigned char hdr[], unsigned long hdr_len, unsigned char msg[], unsigned long msg_len, const unsigned char tag[], unsigned long tag_len, gcm_ctx ctx[1])

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Define Documentation

#define BLK_ADR_MASK   (BLOCK_SIZE - 1)

Definition at line 52 of file gcm.cc.

Referenced by gcm_auth_data(), gcm_auth_header(), and gcm_crypt_data().

#define BLOCK_SIZE   GCM_BLOCK_SIZE

Definition at line 51 of file gcm.cc.

Referenced by gcm_auth_data(), gcm_auth_header(), gcm_compute_tag(), gcm_crypt_data(), gcm_decrypt_message(), and gcm_init_message().

#define BSP_ENABLED   true

Definition at line 39 of file gcm.cc.

#define CTR_POS   12

Definition at line 53 of file gcm.cc.

Referenced by gcm_compute_tag(), and gcm_init_message().

#define gf_mul_hh	(		a,
			ctx,
			scr
	)		gf_mul_8k(a, ctx->gf_t8k, scr)

Definition at line 86 of file gcm.cc.

Referenced by gcm_auth_data(), gcm_auth_header(), gcm_compute_tag(), and gcm_init_message().

#define inc_ctr

(

x

)

{ int i = BLOCK_SIZE; while(i-- > CTR_POS && !++(ui8_ptr(x)[i])) ; }

Definition at line 55 of file gcm.cc.

Referenced by gcm_crypt_data(), and gcm_init_message().

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Function Documentation

ret_type gcm_auth_data	(	const unsigned char	data[],
		unsigned long	data_len,
		gcm_ctx	ctx[1]
	)

Definition at line 197 of file gcm.cc.

References BLK_ADR_MASK, BLOCK_SIZE, BUF_ADRMASK, BUF_INC, GF_BYTE_LEN, gf_mul_hh, RETURN_OK, gcm_ctx::txt_acnt, gcm_ctx::txt_ghv, ui8_ptr, unit_ptr, xor_block(), and xor_block_aligned().

Referenced by gcm_decrypt(), and gcm_encrypt().

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ret_type gcm_auth_header	(	const unsigned char	hdr[],
		unsigned long	hdr_len,
		gcm_ctx	ctx[1]
	)

Definition at line 139 of file gcm.cc.

References BLK_ADR_MASK, BLOCK_SIZE, BUF_ADRMASK, BUF_INC, GF_BYTE_LEN, gf_mul_hh, gcm_ctx::hdr_cnt, gcm_ctx::hdr_ghv, RETURN_OK, ui8_ptr, unit_ptr, xor_block(), and xor_block_aligned().

Referenced by gcm_decrypt_message(), and gcm_encrypt_message().

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ret_type gcm_compute_tag	(	unsigned char	tag[],
		unsigned long	tag_len,
		gcm_ctx	ctx[1]
	)

Definition at line 318 of file gcm.cc.

References gcm_ctx::aes, aes_encrypt, BLOCK_SIZE, CTR_POS, gcm_ctx::ctr_val, gcm_ctx::enc_ctr, GF_BYTE_LEN, gf_mul(), gf_mul_hh, gcm_ctx::ghash_h, gcm_ctx::hdr_cnt, gcm_ctx::hdr_ghv, RETURN_ERROR, RETURN_OK, RETURN_WARN, gcm_ctx::txt_acnt, gcm_ctx::txt_ccnt, gcm_ctx::txt_ghv, ui32_ptr, ui8_ptr, and gcm_ctx::y0_val.

Referenced by gcm_decrypt_message(), gcm_encrypt_message(), and ibrcommon::AES128Stream::getTag().

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ret_type gcm_crypt_data	(	unsigned char	data[],
		unsigned long	data_len,
		gcm_ctx	ctx[1]
	)

Definition at line 255 of file gcm.cc.

References gcm_ctx::aes, aes_encrypt, BLK_ADR_MASK, BLOCK_SIZE, BUF_ADRMASK, BUF_INC, gcm_ctx::ctr_val, gcm_ctx::enc_ctr, inc_ctr, RETURN_OK, gcm_ctx::txt_ccnt, ui8_ptr, unit_ptr, xor_block(), and xor_block_aligned().

Referenced by gcm_decrypt(), and gcm_encrypt().

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ret_type gcm_decrypt	(	unsigned char	data[],
		unsigned long	data_len,
		gcm_ctx	ctx[1]
	)

Definition at line 394 of file gcm.cc.

References gcm_auth_data(), gcm_crypt_data(), and RETURN_OK.

Referenced by ibrcommon::AES128Stream::decrypt(), and gcm_decrypt_message().

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ret_type gcm_decrypt_message	(	const unsigned char	iv[],
		unsigned long	iv_len,
		const unsigned char	hdr[],
		unsigned long	hdr_len,
		unsigned char	msg[],
		unsigned long	msg_len,
		const unsigned char	tag[],
		unsigned long	tag_len,
		gcm_ctx	ctx[1]
	)

Definition at line 421 of file gcm.cc.

References BLOCK_SIZE, gcm_auth_header(), gcm_compute_tag(), gcm_decrypt(), gcm_init_message(), RETURN_ERROR, and RETURN_OK.

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ret_type gcm_encrypt	(	unsigned char	data[],
		unsigned long	data_len,
		gcm_ctx	ctx[1]
	)

Definition at line 383 of file gcm.cc.

References gcm_auth_data(), gcm_crypt_data(), and RETURN_OK.

Referenced by ibrcommon::AES128Stream::encrypt(), and gcm_encrypt_message().

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ret_type gcm_encrypt_message	(	const unsigned char	iv[],
		unsigned long	iv_len,
		const unsigned char	hdr[],
		unsigned long	hdr_len,
		unsigned char	msg[],
		unsigned long	msg_len,
		unsigned char	tag[],
		unsigned long	tag_len,
		gcm_ctx	ctx[1]
	)

Definition at line 404 of file gcm.cc.

References gcm_auth_header(), gcm_compute_tag(), gcm_encrypt(), gcm_init_message(), RETURN_ERROR, and RETURN_OK.

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ret_type gcm_end

(

gcm_ctx

ctx[1]

)

Definition at line 376 of file gcm.cc.

References RETURN_OK.

Referenced by ibrcommon::AES128Stream::~AES128Stream().

ret_type gcm_init_and_key	(	const unsigned char	key[],
		unsigned long	key_len,
		gcm_ctx	ctx[1]
	)

Definition at line 58 of file gcm.cc.

References gcm_ctx::aes, aes_encrypt, aes_encrypt_key(), gcm_ctx::gf_t8k, gcm_ctx::ghash_h, init_256_table(), init_4k_table(), init_64k_table(), init_8k_table(), RETURN_OK, and ui8_ptr.

Referenced by ibrcommon::AES128Stream::AES128Stream().

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ret_type gcm_init_message	(	const unsigned char	iv[],
		unsigned long	iv_len,
		gcm_ctx	ctx[1]
	)

Definition at line 95 of file gcm.cc.

References BLOCK_SIZE, CTR_POS, gcm_ctx::ctr_val, GF_BYTE_LEN, gf_mul_hh, gcm_ctx::hdr_cnt, gcm_ctx::hdr_ghv, inc_ctr, RETURN_OK, gcm_ctx::txt_acnt, gcm_ctx::txt_ccnt, gcm_ctx::txt_ghv, ui32_ptr, ui8_ptr, xor_block_aligned(), and gcm_ctx::y0_val.

Referenced by ibrcommon::AES128Stream::AES128Stream(), gcm_decrypt_message(), and gcm_encrypt_message().

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