1 // SPDX-License-Identifier: BSD-2-Clause
3  * Copyright (c) 2017-2020, Linaro Limited
8 #include <crypto/internal_aes-gcm.h>
17 	internal_aes_gcm_ghash_gen_tbl(&state->ghash_key, ek);  in internal_aes_gcm_set_key()
19 	crypto_aes_enc_block(ek->data, sizeof(ek->data), ek->rounds,  in internal_aes_gcm_set_key()
20 			     state->ctr, state->ghash_key.hash_subkey);  in internal_aes_gcm_set_key()
27 	void *y = state->hash_state;  in ghash_update_block()
31 	internal_aes_gcm_ghash_mult_tbl(&state->ghash_key, y, y);  in ghash_update_block()
33 	internal_aes_gcm_gfmul(state->ghash_key.hash_subkey, y, y);  in ghash_update_block()
41 	size_t n = 0;  in internal_aes_gcm_ghash_update()  local
47 		for (n = 0; n < num_blocks; n++)  in internal_aes_gcm_ghash_update()
50 					   n * TEE_AES_BLOCK_SIZE);  in internal_aes_gcm_ghash_update()
57 	void *buf_cryp = state->buf_cryp;  in encrypt_block()
61 	memcpy(dst, buf_cryp, sizeof(state->buf_cryp));  in encrypt_block()
63 	crypto_aes_enc_block(enc_key->data, sizeof(enc_key->data),  in encrypt_block()
64 			     enc_key->rounds, state->ctr, state->buf_cryp);  in encrypt_block()
72 	size_t n = 0;  in encrypt_pl()  local
75 		for (n = 0; n < num_blocks; n++) {  in encrypt_pl()
76 			const void *s = src + n * TEE_AES_BLOCK_SIZE;  in encrypt_pl()
77 			void *d = dst + n * TEE_AES_BLOCK_SIZE;  in encrypt_pl()
82 		for (n = 0; n < num_blocks; n++) {  in encrypt_pl()
84 			void *d = dst + n * TEE_AES_BLOCK_SIZE;  in encrypt_pl()
86 			memcpy(tmp, src + n * TEE_AES_BLOCK_SIZE, sizeof(tmp));  in encrypt_pl()
96 	void *buf_cryp = state->buf_cryp;  in decrypt_block()
98 	crypto_aes_enc_block(enc_key->data, sizeof(enc_key->data),  in decrypt_block()
99 			     enc_key->rounds, state->ctr, buf_cryp);  in decrypt_block()
104 	memcpy(dst, buf_cryp, sizeof(state->buf_cryp));  in decrypt_block()
111 	size_t n = 0;  in decrypt_pl()  local
114 		for (n = 0; n < num_blocks; n++) {  in decrypt_pl()
115 			const void *s = src + n * TEE_AES_BLOCK_SIZE;  in decrypt_pl()
116 			void *d = dst + n * TEE_AES_BLOCK_SIZE;  in decrypt_pl()
121 		for (n = 0; n < num_blocks; n++) {  in decrypt_pl()
123 			void *d = dst + n * TEE_AES_BLOCK_SIZE;  in decrypt_pl()
125 			memcpy(tmp, src + n * TEE_AES_BLOCK_SIZE, sizeof(tmp));  in decrypt_pl()
137 	assert(!state->buf_pos && num_blocks);  in internal_aes_gcm_update_payload_blocks()