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Commit919594f

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author
Neil Conway
committed
Some builds (depends on crypto engine support?) of OpenSSL
0.9.7x have EVP_DigestFinal function which which clears all ofEVP_MD_CTX. This makes pgcrypto crash in functions whichre-use one digest context several times: hmac() and crypt()with md5 algorithm.Following patch fixes it by carring the digest info aroundEVP_DigestFinal and re-initializing cipher.Marko Kreen.
1 parent852ef58 commit919594f

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‎contrib/pgcrypto/openssl.c‎

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@@ -26,7 +26,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $PostgreSQL: pgsql/contrib/pgcrypto/openssl.c,v 1.13 2003/11/29 22:39:28 pgsql Exp $
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* $PostgreSQL: pgsql/contrib/pgcrypto/openssl.c,v 1.14 2005/03/12 06:53:54 neilc Exp $
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*/
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#include<postgres.h>
@@ -73,8 +73,15 @@ static void
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digest_finish(PX_MD*h,uint8*dst)
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{
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EVP_MD_CTX*ctx= (EVP_MD_CTX*)h->p.ptr;
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constEVP_MD*md=EVP_MD_CTX_md(ctx);
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EVP_DigestFinal(ctx,dst,NULL);
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/*
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* Some builds of 0.9.7x clear all of ctx in EVP_DigestFinal.
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* Fix it by reinitializing ctx.
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*/
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EVP_DigestInit(ctx,md);
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}
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staticvoid

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