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openssl-1_1.8412
0012-s390x-assembly-pack-add-KMA-code-path-for-...
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File 0012-s390x-assembly-pack-add-KMA-code-path-for-aes-gcm.patch of Package openssl-1_1.8412
From acef148f0aac18d78c3c857065b3a1274279b2df Mon Sep 17 00:00:00 2001 From: Patrick Steuer <patrick.steuer@de.ibm.com> Date: Sat, 25 Feb 2017 10:05:12 +0100 Subject: [PATCH 12/44] s390x assembly pack: add KMA code path for aes-gcm. Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com> --- crypto/aes/asm/aes-s390x.pl | 52 ++++++++++++ crypto/evp/e_aes.c | 200 ++++++++++++++++++++++++++++++++++++++++++-- crypto/modes/gcm128.c | 4 + crypto/s390x_arch.h | 5 ++ 4 files changed, 253 insertions(+), 8 deletions(-) Index: openssl-1.1.0g/crypto/aes/asm/aes-s390x.pl =================================================================== --- openssl-1.1.0g.orig/crypto/aes/asm/aes-s390x.pl 2018-01-09 17:35:12.231011406 +0100 +++ openssl-1.1.0g/crypto/aes/asm/aes-s390x.pl 2018-01-09 17:35:16.795082242 +0100 @@ -2257,6 +2257,58 @@ $code.=<<___; .size AES_xts_decrypt,.-AES_xts_decrypt ___ } + +################ +# void s390x_aes_gcm_blocks(unsigned char *out, GCM128_CONTEXT *ctx, +# const unsigned char *in, size_t len, +# const unsigned char *aad, size_t alen, +# const AES_KEY *key, int enc) +{ +my ($out,$ctx,$in,$len,$aad,$alen,$key,$enc) = map("%r$_",(2..9)); +$code.=<<___ if (!$softonly); +.globl s390x_aes_gcm_blocks +.type s390x_aes_gcm_blocks,\@function +.align 16 +s390x_aes_gcm_blocks: + stm$g $alen,$enc,7*$SIZE_T($sp) + lm$g $alen,$enc,$stdframe($sp) + + aghi $sp,-112 + + lmg %r0,%r1,0($ctx) + ahi %r1,-1 + + mvc 16(32,$sp),64($ctx) # copy Xi/H + #mvc 48(16,$sp),48($ctx) # copy len + mvc 80(32,$sp),0($key) # copy key + st %r1,12($sp) # copy Yi + stmg %r0,%r1,64($sp) + + lhi %r1,128 + l %r0,240($key) # kma capability vector checked by caller + sll $enc,7 + xr $enc,%r1 + or %r0,$enc + + la %r1,0($sp) + + .long 0xb9296024 # kma $out,$aad,$in + brc 1,.-4 # pay attention to "partial completion" + + l %r0,12($sp) + mvc 64(16,$ctx),16($sp) # update Xi + xc 0(112,$sp),0($sp) # wipe stack + + la $sp,112($sp) + ahi %r0,1 + st %r0,12($ctx) + + lm$g $alen,$enc,7*$SIZE_T($sp) + br $ra +.size s390x_aes_gcm_blocks,.-s390x_aes_gcm_blocks +___ +} + $code.=<<___; .string "AES for s390x, CRYPTOGAMS by <appro\@openssl.org>" ___ Index: openssl-1.1.0g/crypto/evp/e_aes.c =================================================================== --- openssl-1.1.0g.orig/crypto/evp/e_aes.c 2018-01-09 17:35:12.199010909 +0100 +++ openssl-1.1.0g/crypto/evp/e_aes.c 2018-01-09 17:35:12.239011531 +0100 @@ -960,7 +960,7 @@ const EVP_CIPHER *EVP_aes_##keylen##_##m * If KM and KMC support the function code, AES_KEY structure holds * key/function code (instead of key schedule/number of rounds). */ -# define S390X_AES_FC (((AES_KEY *)(key))->rounds) +# define S390X_AES_FC(key) (((AES_KEY *)(key))->rounds) # define S390X_aes_128_CAPABLE ((OPENSSL_s390xcap_P[5]&S390X_KM_AES_128)&&\ (OPENSSL_s390xcap_P[7]&S390X_KMC_AES_128)) @@ -969,6 +969,11 @@ const EVP_CIPHER *EVP_aes_##keylen##_##m # define S390X_aes_256_CAPABLE ((OPENSSL_s390xcap_P[5]&S390X_KM_AES_256)&&\ (OPENSSL_s390xcap_P[7]&S390X_KMC_AES_256)) +void s390x_aes_gcm_blocks(unsigned char *out, GCM128_CONTEXT *ctx, + const unsigned char *in, size_t len, + const unsigned char *aad, size_t alen, + const AES_KEY *key, int enc); + # define s390x_aes_init_key aes_init_key static int s390x_aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc); @@ -1029,18 +1034,197 @@ static int s390x_aes_cfb1_cipher(EVP_CIP static int s390x_aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t len); -# define S390X_aes_128_gcm_CAPABLE 0 -# define S390X_aes_192_gcm_CAPABLE 0 -# define S390X_aes_256_gcm_CAPABLE 0 +# define S390X_aes_128_gcm_CAPABLE (S390X_aes_128_CAPABLE&&\ + OPENSSL_s390xcap_P[17]\ + &S390X_KMA_GCM_AES_128) +# define S390X_aes_192_gcm_CAPABLE (S390X_aes_192_CAPABLE&&\ + OPENSSL_s390xcap_P[17]\ + &S390X_KMA_GCM_AES_192) +# define S390X_aes_256_gcm_CAPABLE (S390X_aes_256_CAPABLE&&\ + OPENSSL_s390xcap_P[17]\ + &S390X_KMA_GCM_AES_256) + +static int s390x_aes_gcm(GCM128_CONTEXT *ctx, const unsigned char *in, + unsigned char *out, size_t len, int enc) +{ + int n; + size_t rem; + u64 mlen = ctx->len.u[1]; + unsigned char tmp; + + mlen += len; + + if (mlen > ((1ULL << 36) - 32) || (sizeof(len) == 8 && mlen < len)) + return -1; + + ctx->len.u[1] = mlen; + + if (ctx->ares) { + (*ctx->gmult)(ctx->Xi.u, ctx->Htable); + ctx->ares = 0; + } + S390X_AES_FC(ctx->key) |= S390X_KMA_LAAD; + n = ctx->mres; + + if (n) { + while (n && len) { + tmp = *in; + *out = tmp ^ ctx->EKi.c[n]; + ctx->Xi.c[n] ^= enc ? *out : tmp; + n = (n + 1) % AES_BLOCK_SIZE; + --len; + ++in; + ++out; + } + if (n == 0) { + (*ctx->gmult)(ctx->Xi.u, ctx->Htable); + } else { + ctx->mres = n; + return 0; + } + } + rem = len % AES_BLOCK_SIZE; + len -= rem; + + s390x_aes_gcm_blocks(out, ctx, in, len, NULL, 0, ctx->key, enc); + + if (rem) { + in += len; + out += len; + (*ctx->block)(ctx->Yi.c, ctx->EKi.c, ctx->key); + ++ctx->Yi.d[3]; + while (rem--) { + tmp = in[n]; + out[n] = tmp ^ ctx->EKi.c[n]; + ctx->Xi.c[n] ^= enc ? out[n] : tmp; + ++n; + } + } + + ctx->mres = n; + return 0; +} -# define s390x_aes_gcm_init_key aes_gcm_init_key static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc); + const unsigned char *iv, int enc) +{ + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); + const int keybitlen = EVP_CIPHER_CTX_key_length(ctx) * 8; + + if (!iv && !key) + return 1; + + if (key) { + AES_set_encrypt_key(key, keybitlen, &gctx->ks.ks); + CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt); + S390X_AES_FC(&gctx->ks) |= S390X_KMA_HS; + + if (iv == NULL && gctx->iv_set) + iv = gctx->iv; + + if (iv) { + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + gctx->iv_set = 1; + } + gctx->key_set = 1; + } else { + if (gctx->key_set) + CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen); + else + memcpy(gctx->iv, iv, gctx->ivlen); + + gctx->iv_set = 1; + gctx->iv_gen = 0; + } + return 1; +} + +static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) +{ + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); + unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); + int enc = EVP_CIPHER_CTX_encrypting(ctx); + int rv = -1; + + if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN)) + return -1; + + if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN : + EVP_CTRL_GCM_SET_IV_INV, + EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0) + goto err; + + if (CRYPTO_gcm128_aad(&gctx->gcm, buf, gctx->tls_aad_len)) + goto err; + + in += EVP_GCM_TLS_EXPLICIT_IV_LEN; + out += EVP_GCM_TLS_EXPLICIT_IV_LEN; + len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; + + if (s390x_aes_gcm(&gctx->gcm, in, out, len, enc)) + goto err; + + if (enc) { + out += len; + CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN); + rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN; + } else { + CRYPTO_gcm128_tag(&gctx->gcm, buf, EVP_GCM_TLS_TAG_LEN); + + if (CRYPTO_memcmp(buf, in + len, EVP_GCM_TLS_TAG_LEN)) { + OPENSSL_cleanse(out, len); + goto err; + } + rv = len; + } + err: + gctx->iv_set = 0; + gctx->tls_aad_len = -1; + return rv; +} -# define s390x_aes_gcm_cipher aes_gcm_cipher static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t len); + const unsigned char *in, size_t len) +{ + EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx); + unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx); + int enc = EVP_CIPHER_CTX_encrypting(ctx); + + if (!gctx->key_set) + return -1; + + if (gctx->tls_aad_len >= 0) + return s390x_aes_gcm_tls_cipher(ctx, out, in, len); + + if (!gctx->iv_set) + return -1; + + if (in) { + if (out == NULL) { + if (CRYPTO_gcm128_aad(&gctx->gcm, in, len)) + return -1; + } else { + if (s390x_aes_gcm(&gctx->gcm, in, out, len, enc)) + return -1; + } + return len; + } else { + if (enc) { + gctx->taglen = 16; + CRYPTO_gcm128_tag(&gctx->gcm, buf, gctx->taglen); + } else { + if (gctx->taglen < 0) + return -1; + + if (CRYPTO_gcm128_finish(&gctx->gcm, buf, gctx->taglen)) + return -1; + } + gctx->iv_set = 0; + return 0; + } +} # define S390X_aes_128_xts_CAPABLE 1 /* checked by callee */ # define S390X_aes_256_xts_CAPABLE 1 Index: openssl-1.1.0g/crypto/modes/gcm128.c =================================================================== --- openssl-1.1.0g.orig/crypto/modes/gcm128.c 2017-11-02 15:29:03.000000000 +0100 +++ openssl-1.1.0g/crypto/modes/gcm128.c 2018-01-09 17:35:12.239011531 +0100 @@ -817,6 +817,10 @@ void CRYPTO_gcm128_init(GCM128_CONTEXT * ctx->gmult = gcm_gmult_4bit; CTX__GHASH(gcm_ghash_4bit); } +# elif defined(GHASH_ASM) + gcm_init_4bit(ctx->Htable, ctx->H.u); + ctx->gmult = gcm_gmult_4bit; + CTX__GHASH(gcm_ghash_4bit); # else gcm_init_4bit(ctx->Htable, ctx->H.u); # endif Index: openssl-1.1.0g/crypto/s390x_arch.h =================================================================== --- openssl-1.1.0g.orig/crypto/s390x_arch.h 2018-01-09 17:35:12.207011034 +0100 +++ openssl-1.1.0g/crypto/s390x_arch.h 2018-01-09 17:35:12.239011531 +0100 @@ -45,4 +45,9 @@ extern uint64_t OPENSSL_s390xcap_P[]; # define S390X_KMA_GCM_AES_192 (1ULL << 44) # define S390X_KMA_GCM_AES_128 (1ULL << 45) +/* %r0 flags */ +# define S390X_KMA_LPC (1ULL << 8) +# define S390X_KMA_LAAD (1ULL << 9) +# define S390X_KMA_HS (1ULL << 10) + #endif
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