OpenSSL RSA Plus decryption (. NET public key encryption/Linux side private key decryption)

Source: Internet
Author: User
Tags openssl rsa

Requirements in. NET side to generate a public-private key pair.

And then in. NET side using RSA public key encryption, using RSA private key decryption on Linux side.

The initial attempt was:. NET end use RSACryptoServiceProvider; The Linux side uses OpenSSL

For a full 5 hours, there are wood, there are wood ah! NET RSA and OpenSSL is not on, there are wood, ah, there are wood ah!

People get dizzy or not. The final solution was replaced by,. NET End uses

. NET-side code

    1. String publickeyfile = context.  Server.MapPath ("~/app_data/public.pem");
    2. using (RSA RSA = RSA. Frompublickey (BIO. File (Publickeyfile, "R" )))
    3. {
    4. Buffer = RSA. Publicencrypt (buffer, RSA. PADDING.OAEP);
    5. EncryptedKey = convert.tobase64string (buffer);
    6. }

Linux-side code

    1. BIO *b64, *bmem;
    2. Base64 decoding
    3. unsigned char *buffer = (unsigned char *) malloc (length);
    4. memset (buffer, 0, length);
    5. b64 = Bio_new (Bio_f_base64 ());
    6. Bio_set_flags (b64, BIO_FLAGS_BASE64_NO_NL);
    7. Bmem = Bio_new_mem_buf (szkey, length);
    8. Bmem = Bio_push (b64, Bmem);
    9. int len = bio_read (bmem, buffer, length);
    10. Bio_free_all (BMEM);
    11. Load private key
    12. BIO * key = NULL;
    13. RSA * r = NULL;
    14. Key = Bio_new (Bio_s_file ());
    15. Bio_read_filename (Key, "/val/xxx/private.pem");
    16. R = Pem_read_bio_rsaprivatekey (key, NULL, NULL, NULL);
    17. Bio_free_all (key);
    18. unsigned char * plaintext = (unsigned char *) malloc (len);
    19. memset (plaintext, 0, Len);
    20. Decrypt
    21. int ret = Rsa_private_decrypt (Rsa_size (R), buffer, plaintext, r, rsa_pkcs1_oaep_padding);
    22. Rsa_free (R);
    23. Free (plaintext);
    24. Free (buffer);

OpenSSL RSA Plus decryption (. NET public key encryption/Linux side private key decryption)

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.