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3675334e2b
bsaes_cbc_encrypt -> ossl_bsaes_cbc_encrypt bsaes_ctr32_encrypt_blocks -> ossl_bsaes_ctr32_encrypt_blocks bsaes_xts_decrypt -> ossl_bsaes_xts_decrypt bsaes_xts_encrypt -> ossl_bsaes_xts_encrypt Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/15445)
151 lines
4.6 KiB
C
151 lines
4.6 KiB
C
/*
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* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Dispatch functions for AES GCM mode */
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/*
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* This file uses the low level AES functions (which are deprecated for
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* non-internal use) in order to implement provider AES ciphers.
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*/
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#include "internal/deprecated.h"
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#include "cipher_aes_gcm.h"
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static int aes_gcm_initkey(PROV_GCM_CTX *ctx, const unsigned char *key,
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size_t keylen)
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{
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PROV_AES_GCM_CTX *actx = (PROV_AES_GCM_CTX *)ctx;
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AES_KEY *ks = &actx->ks.ks;
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# ifdef HWAES_CAPABLE
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if (HWAES_CAPABLE) {
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# ifdef HWAES_ctr32_encrypt_blocks
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GCM_HW_SET_KEY_CTR_FN(ks, HWAES_set_encrypt_key, HWAES_encrypt,
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HWAES_ctr32_encrypt_blocks);
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# else
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GCM_HW_SET_KEY_CTR_FN(ks, HWAES_set_encrypt_key, HWAES_encrypt, NULL);
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# endif /* HWAES_ctr32_encrypt_blocks */
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} else
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# endif /* HWAES_CAPABLE */
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# ifdef BSAES_CAPABLE
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if (BSAES_CAPABLE) {
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt,
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ossl_bsaes_ctr32_encrypt_blocks);
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} else
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# endif /* BSAES_CAPABLE */
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# ifdef VPAES_CAPABLE
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if (VPAES_CAPABLE) {
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GCM_HW_SET_KEY_CTR_FN(ks, vpaes_set_encrypt_key, vpaes_encrypt, NULL);
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} else
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# endif /* VPAES_CAPABLE */
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{
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# ifdef AES_CTR_ASM
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt,
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AES_ctr32_encrypt);
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# else
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GCM_HW_SET_KEY_CTR_FN(ks, AES_set_encrypt_key, AES_encrypt, NULL);
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# endif /* AES_CTR_ASM */
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}
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ctx->key_set = 1;
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return 1;
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}
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static int generic_aes_gcm_cipher_update(PROV_GCM_CTX *ctx, const unsigned char *in,
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size_t len, unsigned char *out)
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{
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if (ctx->enc) {
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if (ctx->ctr != NULL) {
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#if defined(AES_GCM_ASM)
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size_t bulk = 0;
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if (len >= AES_GCM_ENC_BYTES && AES_GCM_ASM(ctx)) {
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size_t res = (16 - ctx->gcm.mres) % 16;
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if (CRYPTO_gcm128_encrypt(&ctx->gcm, in, out, res))
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return 0;
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bulk = AES_gcm_encrypt(in + res, out + res, len - res,
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ctx->gcm.key,
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ctx->gcm.Yi.c, ctx->gcm.Xi.u);
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ctx->gcm.len.u[1] += bulk;
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bulk += res;
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}
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if (CRYPTO_gcm128_encrypt_ctr32(&ctx->gcm, in + bulk, out + bulk,
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len - bulk, ctx->ctr))
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return 0;
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#else
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if (CRYPTO_gcm128_encrypt_ctr32(&ctx->gcm, in, out, len, ctx->ctr))
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return 0;
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#endif /* AES_GCM_ASM */
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} else {
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if (CRYPTO_gcm128_encrypt(&ctx->gcm, in, out, len))
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return 0;
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}
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} else {
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if (ctx->ctr != NULL) {
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#if defined(AES_GCM_ASM)
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size_t bulk = 0;
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if (len >= AES_GCM_DEC_BYTES && AES_GCM_ASM(ctx)) {
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size_t res = (16 - ctx->gcm.mres) % 16;
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if (CRYPTO_gcm128_decrypt(&ctx->gcm, in, out, res))
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return -1;
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bulk = AES_gcm_decrypt(in + res, out + res, len - res,
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ctx->gcm.key,
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ctx->gcm.Yi.c, ctx->gcm.Xi.u);
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ctx->gcm.len.u[1] += bulk;
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bulk += res;
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}
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if (CRYPTO_gcm128_decrypt_ctr32(&ctx->gcm, in + bulk, out + bulk,
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len - bulk, ctx->ctr))
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return 0;
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#else
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if (CRYPTO_gcm128_decrypt_ctr32(&ctx->gcm, in, out, len, ctx->ctr))
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return 0;
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#endif /* AES_GCM_ASM */
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} else {
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if (CRYPTO_gcm128_decrypt(&ctx->gcm, in, out, len))
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return 0;
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}
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}
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return 1;
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}
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static const PROV_GCM_HW aes_gcm = {
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aes_gcm_initkey,
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ossl_gcm_setiv,
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ossl_gcm_aad_update,
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generic_aes_gcm_cipher_update,
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ossl_gcm_cipher_final,
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ossl_gcm_one_shot
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};
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#if defined(S390X_aes_128_CAPABLE)
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# include "cipher_aes_gcm_hw_s390x.inc"
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#elif defined(AESNI_CAPABLE)
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# include "cipher_aes_gcm_hw_aesni.inc"
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#elif defined(SPARC_AES_CAPABLE)
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# include "cipher_aes_gcm_hw_t4.inc"
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#elif defined(AES_PMULL_CAPABLE) && defined(AES_GCM_ASM)
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# include "cipher_aes_gcm_hw_armv8.inc"
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#else
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const PROV_GCM_HW *ossl_prov_aes_hw_gcm(size_t keybits)
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{
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return &aes_gcm;
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}
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#endif
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