Objective C Generate Rsa Key

12.12.202022.08.2017admin

Feb 25, 2020 Objective-C-RSA Doing RSA encryption with Objective-C iOS If you have the same qustion as mine: iOS Objective-C RSA encrypt with only public key and descrypt with PHP. What I'm trying to do is generate random RSA keys and then store them before my program terminates. This part is working just fine using RSAgeneratekey, PEMwritebioRSAPrivateKey and PEMwritebioRSAPUBKEY. I can also encrypt/decrypt just find using the RSA structure returned by RSAgenerate. Generates an RSA SSH key and saves to various public and private key file formats (OpenSSH and PuTTY). Chilkat Objective-C Library Downloads MAC OS X (Cocoa) Libs. May 16, 2013 I had a bit of a fun time working on a simple key exchange mechanism between C# and Objective-C using OpenSSL. My goal was on the Objective-C side to generate a public/private key pair, and pass the public key to C# in a way that I could use it to encrypt small amounts of data (like a symmetric key). Send data securely to other parties via an HTTP request. There are many tools to generate RSA pair keys. It’s recommended to use a 2048bit size. Put Bob’s private key. (Objective-C) RSA Encrypt/Decrypt AES Key. Demonstrates how to use RSA to protect a key for AES encryption. It can be used in this scenario: You will provide your RSA public key to any number of counterparts. Your counterpart will generate an AES key, encrypt data (or a file) using it, then encrypt the AES key using your RSA public key. Key generator for any software.

Objective C Generate Rsa Key Pair
Objective C Generate Rsa Key Generator

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Objective C Generate Rsa Key Pair

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<?php

$config = array(

'digest_alg' => 'sha512',

'private_key_bits' => 1024,

'private_key_type' => OPENSSL_KEYTYPE_RSA,

);

$res = openssl_pkey_new($config);

$private_key = ';

openssl_pkey_export($res, $private_key);

$details = openssl_pkey_get_details($res);

$public_key = $details['key'];

echo'n';

echo'create private key and public key:n';

echo'# PRIVATE:n';

echostr_replace('n', 'n', $private_key) . 'n';

echo'# PUBLIC:n';

echostr_replace('n', 'n', $public_key) . 'n';

#var_dump($private_key, $public_key);

echo'n';

echo'nnn';

$public_key = '-----BEGIN PUBLIC KEY-----nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDDI2bvVLVYrb4B0raZgFP60VXYncvRmk9q56QiTmEm9HXlSPq1zyhyPQHGti5FokYJMzNcKm0bwL1q6ioJuD4EFI56Dna+70XdRz1CjQPQE3yXrXXVvOsmq9LsdxTFWsVBTehdCmrapKZVVx6PKl7myh0cfXnQmyveT/eqyZK1gYjvQIDAQABn-----END PUBLIC KEY-----';

$private_key = '-----BEGIN PRIVATE KEY-----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n-----END PRIVATE KEY-----';

$data = 'hello world';

$data = str_repeat($data, 20);

$crypted = ';

for($i=0; $i<strlen($data); $i+=117){

$src = substr($data, $i, 117);

$ret = openssl_public_encrypt($src, $out, $public_key);

$crypted .= $out;

}

echo'# enc by public:n' . base64_encode($crypted) . 'n';

$out_plain = ';

for($i=0; $i<strlen($crypted); $i+=128){

$src = substr($crypted, $i, 128);

$ret = openssl_private_decrypt($src, $out, $private_key);

$out_plain .= $out;

}

echo'#dec by private:n' . $out_plain. 'n';

echo'nn';

$crypted = ';

for($i=0; $i<strlen($data); $i+=117){

$src = substr($data, $i, 117);

$ret = openssl_private_encrypt($src, $out, $private_key);

$crypted .= $out;

}

echo'#enc by private:n' . base64_encode($crypted) . 'n';

$out_plain = ';

for($i=0; $i<strlen($crypted); $i+=128){

$src = substr($crypted, $i, 128);

$ret = openssl_public_decrypt($src, $out, $public_key);

$out_plain .= $out;

}

echo'#dec by public:n' . $out_plain. 'n';

echo'nn';

$enc_pub = ';

$enc_pub = 'Cd2u145czWA/1tY/Lmvo7cZDfO4yjxlfN++LQfasHLsEV2LNrdjX+GK6A//D5wrkP67KA4LtJmzmUCCoGqV9e5Mwz3vc4eblYkz/LdoGpIuj6Lid931ylloeulqHOVzJaGCefZ28kGl4mHndavdQUr8LPz0aowF6PC8rZFIFsx8TZQxFBDDddQ2n1zEzOjxfkDX2L05REoW4pGM4rFhpMHloaDKOgVkU26jEEawAksJnZ31w+O1oNq1/02l1kxZjQsAx5YZRvilzQ4gOgOIvoXxntwOyEk3EEJNl20FlX7I34i+GT7Dqyw0llo29thqfTPE8sujDPMpCHTATkQGBsg';

$crypted = base64_decode($enc_pub);

$out_plain = ';

for($i=0; $i<strlen($crypted); $i+=128){

$src = substr($crypted, $i, 128);

$ret = openssl_private_decrypt($src, $out, $private_key);

$out_plain .= $out;

}

echo'dec by private:n' . $out_plain . 'n';

$enc_priv = ';

$crypted = base64_decode($enc_priv);

$out_plain = ';

for($i=0; $i<strlen($crypted); $i+=128){

$src = substr($crypted, $i, 128);

$ret = openssl_public_decrypt($src, $out, $public_key);

$out_plain .= $out;

}

echo'#dec by public:n' . $out_plain. 'n';

Objective C Generate Rsa Key Generator

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