From d4575825f1ded552a32c70f8d5e62668978eda91 Mon Sep 17 00:00:00 2001 From: "Dr. Stephen Henson" Date: Sun, 1 Feb 2004 13:39:51 +0000 Subject: [PATCH] Add flag to avoid continuous memory allocate when calling EVP_MD_CTX_copy_ex(). Without this HMAC is several times slower than < 0.9.7. --- CHANGES | 6 ++++++ crypto/evp/digest.c | 15 ++++++++++++--- crypto/evp/evp.h | 2 ++ 3 files changed, 20 insertions(+), 3 deletions(-) diff --git a/CHANGES b/CHANGES index f3c304af7c..5590487fd1 100644 --- a/CHANGES +++ b/CHANGES @@ -617,6 +617,12 @@ Changes between 0.9.7c and 0.9.7d [xx XXX XXXX] + *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when + calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without + this HMAC (and other) operations are several times slower than OpenSSL + < 0.9.7. + [Steve Henson] + *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). [Peter Sylvester ] diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c index b22eed4421..0623ddf1f0 100644 --- a/crypto/evp/digest.c +++ b/crypto/evp/digest.c @@ -248,6 +248,7 @@ int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) { + unsigned char *tmp_buf; if ((in == NULL) || (in->digest == NULL)) { EVPerr(EVP_F_EVP_MD_CTX_COPY,EVP_R_INPUT_NOT_INITIALIZED); @@ -262,15 +263,22 @@ int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) } #endif + if (out->digest == in->digest) + { + tmp_buf = out->md_data; + EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE); + } + else tmp_buf = NULL; EVP_MD_CTX_cleanup(out); memcpy(out,in,sizeof *out); if (out->digest->ctx_size) { - out->md_data=OPENSSL_malloc(out->digest->ctx_size); + if (tmp_buf) out->md_data = tmp_buf; + else out->md_data=OPENSSL_malloc(out->digest->ctx_size); memcpy(out->md_data,in->md_data,out->digest->ctx_size); } - + if (out->digest->copy) return out->digest->copy(out,in); @@ -308,7 +316,8 @@ int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx) if (ctx->digest && ctx->digest->cleanup && !EVP_MD_CTX_test_flags(ctx,EVP_MD_CTX_FLAG_CLEANED)) ctx->digest->cleanup(ctx); - if (ctx->digest && ctx->digest->ctx_size && ctx->md_data) + if (ctx->digest && ctx->digest->ctx_size && ctx->md_data + && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) { OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size); OPENSSL_free(ctx->md_data); diff --git a/crypto/evp/evp.h b/crypto/evp/evp.h index a5f3c449c9..dd2d186a56 100644 --- a/crypto/evp/evp.h +++ b/crypto/evp/evp.h @@ -288,6 +288,8 @@ struct env_md_ctx_st * once only */ #define EVP_MD_CTX_FLAG_CLEANED 0x0002 /* context has already been * cleaned */ +#define EVP_MD_CTX_FLAG_REUSE 0x0004 /* Don't free up ctx->md_data + * in EVP_MD_CTX_cleanup */ struct evp_cipher_st { -- 2.40.0