krb5 commit [krb5-1.17]: Don't assume OpenSSL failures are memory errors

[Greg Hudson]

https://github.com/krb5/krb5/commit/1a8e94f85b5177187a6ca953225d491257a1835d
commit 1a8e94f85b5177187a6ca953225d491257a1835d
Author: Robbie Harwood <rharwood at redhat.com>
Date:   Wed Feb 5 12:56:00 2020 -0500

    Don't assume OpenSSL failures are memory errors
    
    More recent versions of OpenSSL can fail for other reasons.  Indicate
    a crypto-related error occurred rather than a memory error to aid
    debugging.
    
    (cherry picked from commit bf9b2134ceddd6c727362be894b1c95c297a0f17)
    
    ticket: 8873
    version_fixed: 1.17.2

 src/lib/crypto/openssl/hash_provider/hash_evp.c |    2 +-
 src/lib/crypto/openssl/sha256.c                 |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/crypto/openssl/hash_provider/hash_evp.c b/src/lib/crypto/openssl/hash_provider/hash_evp.c
index 957ed8d..1e0fb8f 100644
--- a/src/lib/crypto/openssl/hash_provider/hash_evp.c
+++ b/src/lib/crypto/openssl/hash_provider/hash_evp.c
@@ -58,7 +58,7 @@ hash_evp(const EVP_MD *type, const krb5_crypto_iov *data, size_t num_data,
     }
     ok = ok && EVP_DigestFinal_ex(ctx, (uint8_t *)output->data, NULL);
     EVP_MD_CTX_free(ctx);
-    return ok ? 0 : ENOMEM;
+    return ok ? 0 : KRB5_CRYPTO_INTERNAL;
 }
 
 static krb5_error_code
diff --git a/src/lib/crypto/openssl/sha256.c b/src/lib/crypto/openssl/sha256.c
index 0edd8b7..f9dfc85 100644
--- a/src/lib/crypto/openssl/sha256.c
+++ b/src/lib/crypto/openssl/sha256.c
@@ -48,5 +48,5 @@ k5_sha256(const krb5_data *in, size_t n, uint8_t out[K5_SHA256_HASHLEN])
         ok = ok && EVP_DigestUpdate(ctx, in[i].data, in[i].length);
     ok = ok && EVP_DigestFinal_ex(ctx, out, NULL);
     EVP_MD_CTX_free(ctx);
-    return ok ? 0 : ENOMEM;
+    return ok ? 0 : KRB5_CRYPTO_INTERNAL;
 }