Rust

Create PKCS7 (CMS) EnvelopedData

Encrypt some data to a recipient by creating a PKCS7 (CMS) EnvelopedData structure. The data will be encrypted using a symmetric content-encryption algorithm (e.g., AES), and the randomly generated symmetric key will be encrypted using the recipient’s RSA public key extracted from their X.509 certificate. Rust

let mut success = false;

let crypt = chilkat::Crypt2::new();

// Specify the encryption to be used.
// "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped-data) message.
crypt.set_crypt_algorithm("pki");
crypt.set_pkcs7_crypt_alg("aes");
crypt.set_key_length(256);
crypt.set_oaep_hash("sha256");
crypt.set_oaep_padding(true);

let cert = chilkat::Cert::new();

// Use a certificate found in the Windows certificate store.
success = cert.load_by_common_name("My Certificate").is_ok();
if !success {
    println!("{}", cert.last_error_text());
    return;
}

// Tell the crypt object to use the certificate.
let _ = crypt.set_encrypt_cert(&cert);

let to_be_encrypted = "This string is to be encrypted.".to_string();

// Get the result in multi-line BASE64 MIME format.
crypt.set_encoding_mode("base64_mime");
crypt.set_charset("utf-8");

let result = crypt.encrypt_string_enc(&to_be_encrypted).unwrap_or_default();
if !success {
    println!("{}", crypt.last_error_text());
    return;
}

// -------------------------------------------------------------------------
// See the following example to decrypt what was created in this example
// Decrypt PKCS7 (CMS) EnvelopedData
// -------------------------------------------------------------------------

println!("{}", result);

// Sample output:

// MIICSgYJKoZIhvcNAQcDoIICOzCCAjcCAQAxggHiMIIB3gIBADCBljCBgTELMAkGA1UEBhMCSVQx
// EDAOBgNVBAgMB0JlcmdhbW8xGTAXBgNVBAcMEFBvbnRlIFNhbiBQaWV0cm8xFzAVBgNVBAoMDkFj
// dGFsaXMgUy5wLkEuMSwwKgYDVQQDDCNBY3RhbGlzIENsaWVudCBBdXRoZW50aWNhdGlvbiBDQSBH
// MwIQPCWvkSv8oQ7xRmEHJ6TzEDA8BgkqhkiG9w0BAQcwL6APMA0GCWCGSAFlAwQCAQUAoRwwGgYJ
// KoZIhvcNAQEIMA0GCWCGSAFlAwQCAQUABIIBAKqHAPQNSsQoX7B2NH7QyEOWQRsSVs8oCHXmy8f4
// MVZD2er3bvYUCIomxpwbLEAl14qjUIMynahooYGgqip7+4FqL301G+BVjZVfEhHWj+VI1dAWnWuL
// VHlvc/pbQNBWqV8rKVJsNIsuAZkdj4WSwLVKxYkYX43B8fh/g71XN2DTJu7Z/824v48KBmgpQBOT
// 2q7IcDGxNPAFN2p6eavIVGn2LvhEbf/Fszyj+GR5tMcnQP1BOLJ3s3JzUBbvj8hcZrF1Vhl9HnTU
// YQx8G/KdW1mR+Wlhl3BWoK0LYKRTbnTx2BXOs0CY1SXOAdhKr01ZYjA+xW4nGzY0lfXS9QZjh9gw
// TAYJKoZIhvcNAQcBMB0GCWCGSAFlAwQBKgQQw0xTbfmnt0zjWHo5SaQIp4AgxTVY9E/Ncqy6t+RM
// 8y4c3Av62/wB8IpPUEmtM2OeuZo=