PrivateKey Decrypt Failure

[Chitrang Srivastava]

Hi,

I am using openssl 1.1.1b and I am storing private key encrypted.

I am storing private key as
*PEM_write_bio_PrivateKey*(bio, pkey, EVP_aes_128_cbc(), PKeyPassPKCS12, 0,
0, NULL);
and on system startup reading using the following way
 if(!*PEM_read_bio_PrivateKey*(keyBIO, &user_s_key, NULL,
decryptSharedSecret))

Upon debugging I found it is failing in PKCS12_pbe_crypt >
*EVP_CipherFinal_ex*
Please suggest where I am doing wrong?
Could this be appear to related to padding ?
Without encryption of key , it works fine , which clear other code is all
fine.

Thanks,

*evp_enc.c:EVP_DecryptFinal_ex:569*
/*
         * The following assumes that the ciphertext has been authenticated.
         * Otherwise it provides a padding oracle.
         */
        n = ctx->final[b - 1];
        if (n == 0 || n > (int)b) {

*            EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_BAD_DECRYPT);*
    return 0;
        }
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