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tpm2: Do not call EVP_PKEY_CTX_set0_rsa_oaep_label() for label of size 0 (OSSL 3)

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Openssl 3.0 did return an error if EVP_PKEY_CTX_set0_rsa_oaep_label was called
with label size 0. The function should only be called if the size of the label
is greater 0.
With this fix TPM2_RSA_Encrypt/Decrypt did work with OpenSSL 1.1 and 3.0
for encryption without label.

Signed-off-by: Juergen Repp <juergen.repp@sit.fraunhofer.de>
This commit is contained in:
Juergen Repp 2022-02-19 12:59:32 +01:00 committed by Stefan Berger
parent a8622792c0
commit f7f89e33da
1 changed files with 2 additions and 3 deletions
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5
src/tpm2/crypto/openssl/CryptRsa.c
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@ -1356,10 +1356,9 @@ CryptRsaEncrypt(
if (tmp == NULL)
ERROR_RETURN(TPM_RC_FAILURE);
memcpy(tmp, label->buffer, label->size);
if (EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, tmp, label->size) <= 0)
ERROR_RETURN(TPM_RC_FAILURE);
}
// label->size == 0 is supported
if (EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, tmp, label->size) <= 0)
ERROR_RETURN(TPM_RC_FAILURE);
tmp = NULL;
break;
default: