Decryption with openssl not working

StackOverflow https://stackoverflow.com/questions/15182572

Question

Here is my php script

<?php
$pubfile = fopen("public_key.pem", "r");
$public = fread($pubfile, 8192);
fclose($pubfile);
openssl_get_publickey($public);

$prifile = fopen("private_key.pem", "r");
$private = fread($prifile, 8192);
fclose($prifile);
openssl_get_privatekey($private);

$plaintext = "hello";

openssl_public_encrypt ($plaintext , $crypted , $public);

openssl_private_decrypt($crypted, $decrypted, $private);
echo $decrypted;
?>

my respective public and private keys

private_key.pem

    -----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

public_key.pem

    -----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnDI+Q/tbVToQ30DBB0y6
89ivB01gRhuAEYCqMeezhE8CrzQN3WGsox3Q3ortLZkbuFrMQdBN6ZjD1w0k9utx
Lr3MFRbXqAxeXd7NlCz9biBaQw1LboKr10kVyENPTRT2NrQnfsFsI6WfvMKiu62/
ZEHT80DMUvilSSuRbNKrfwMqhKiRbM83Olxepk8XBNyRimvypxaPhcEiQYFlirVq
/jvyUaJg01VjXxp1PKqXwIurF+Eu+W6b4OotLHY0EAPckNiP4XOHMNWd/NG5jV3F
mEzz5Cn9IdMDHSewcA6/rsOqVx0bZOBnSsmVLu9fPsCyrs7eBSXZSlIFKHD39HR6
eQIDAQAB
-----END PUBLIC KEY-----

$crypted returns to me encrypted data however decryption echos nothing.

I did an echo of the result and it comes back as NULL any ideas?

Was it helpful?

Solution

Solved. I don't know what happened but after generating new key pairs script worked. I might have possibly mixed up my key pairs

OTHER TIPS

Using openssl rsa to dump the key contents reveals that the private and public keys you posted above have a different modulus. For a matching keypair, the modulus would be identical in the private and public keys. In other words, you definately mixed up different keys there.

To detect this, OpenSSL proper has the RSA_check_key() function to check whether an RSA keypair is usable, but the PHP wrapper for OpenSSL does not seem to expose that function to the user.

Public key:

% openssl rsa -in public_key.pem -pubin -text
Public-Key: (2048 bit)
Modulus:
    00:9c:32:3e:43:fb:5b:55:3a:10:df:40:c1:07:4c:
    ba:f3:d8:af:07:4d:60:46:1b:80:11:80:aa:31:e7:
    b3:84:4f:02:af:34:0d:dd:61:ac:a3:1d:d0:de:8a:
    ed:2d:99:1b:b8:5a:cc:41:d0:4d:e9:98:c3:d7:0d:
    24:f6:eb:71:2e:bd:cc:15:16:d7:a8:0c:5e:5d:de:
    cd:94:2c:fd:6e:20:5a:43:0d:4b:6e:82:ab:d7:49:
    15:c8:43:4f:4d:14:f6:36:b4:27:7e:c1:6c:23:a5:
    9f:bc:c2:a2:bb:ad:bf:64:41:d3:f3:40:cc:52:f8:
    a5:49:2b:91:6c:d2:ab:7f:03:2a:84:a8:91:6c:cf:
    37:3a:5c:5e:a6:4f:17:04:dc:91:8a:6b:f2:a7:16:
    8f:85:c1:22:41:81:65:8a:b5:6a:fe:3b:f2:51:a2:
    60:d3:55:63:5f:1a:75:3c:aa:97:c0:8b:ab:17:e1:
    2e:f9:6e:9b:e0:ea:2d:2c:76:34:10:03:dc:90:d8:
    8f:e1:73:87:30:d5:9d:fc:d1:b9:8d:5d:c5:98:4c:
    f3:e4:29:fd:21:d3:03:1d:27:b0:70:0e:bf:ae:c3:
    aa:57:1d:1b:64:e0:67:4a:c9:95:2e:ef:5f:3e:c0:
    b2:ae:ce:de:05:25:d9:4a:52:05:28:70:f7:f4:74:
    7a:79
Exponent: 65537 (0x10001)
writing RSA key
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnDI+Q/tbVToQ30DBB0y6
89ivB01gRhuAEYCqMeezhE8CrzQN3WGsox3Q3ortLZkbuFrMQdBN6ZjD1w0k9utx
Lr3MFRbXqAxeXd7NlCz9biBaQw1LboKr10kVyENPTRT2NrQnfsFsI6WfvMKiu62/
ZEHT80DMUvilSSuRbNKrfwMqhKiRbM83Olxepk8XBNyRimvypxaPhcEiQYFlirVq
/jvyUaJg01VjXxp1PKqXwIurF+Eu+W6b4OotLHY0EAPckNiP4XOHMNWd/NG5jV3F
mEzz5Cn9IdMDHSewcA6/rsOqVx0bZOBnSsmVLu9fPsCyrs7eBSXZSlIFKHD39HR6
eQIDAQAB
-----END PUBLIC KEY-----

Private key:

% openssl rsa -in private_key.pem -text
Private-Key: (2048 bit)
modulus:
    00:b7:0c:6f:3e:96:ef:6d:e2:42:ce:d5:a5:40:20:
    b4:c3:69:90:4c:d2:02:6a:ba:48:91:b1:53:ce:51:
    28:a1:70:3c:66:8d:f4:b0:df:5c:74:7d:08:7d:af:
    e9:22:17:f1:d0:b6:e6:f9:ed:37:17:3e:4d:65:e9:
    49:67:94:11:89:17:e8:37:db:5c:6f:9c:d8:af:0b:
    d5:5b:1d:52:47:a6:68:e6:6a:12:4b:96:04:bd:54:
    96:56:9b:b7:0f:bc:77:20:ed:97:56:d4:c7:95:64:
    d3:45:99:36:73:e6:6e:15:1d:de:23:00:d9:6e:6b:
    8e:89:39:ae:24:c4:02:26:24:5d:f2:9a:9f:e2:c5:
    42:a0:ac:d6:ad:49:81:b9:3d:a9:73:fb:1d:51:0e:
    08:3f:29:46:2b:7c:86:57:2c:47:35:af:20:0a:40:
    6c:ff:35:6a:dc:8d:19:bb:b3:71:f2:65:bc:0d:39:
    fd:12:f3:f4:da:69:05:1f:29:c9:66:02:84:d1:22:
    5f:b6:ee:8c:a7:d0:43:97:8a:91:e1:3f:3c:f7:a2:
    be:67:51:62:de:ac:77:88:ae:a7:92:36:23:5c:26:
    18:64:1f:74:ea:e5:a2:aa:6e:c1:2b:fe:33:6f:3b:
    9c:eb:4e:3e:05:9e:0b:38:f8:02:b0:ef:9a:66:3c:
    77:cb
publicExponent: 65537 (0x10001)
privateExponent:
    18:13:7e:9e:50:e3:f5:24:09:7d:83:04:55:46:f7:
    ff:ab:e6:da:f3:d4:75:8d:42:f6:46:c8:ab:1e:69:
    a5:b2:49:7f:83:b4:67:7f:39:7d:e8:e4:31:03:ee:
    3a:19:c4:28:9b:a6:0d:c1:71:b9:90:ec:45:37:45:
    fc:65:b1:58:c2:d8:3c:60:91:eb:ec:49:63:dc:be:
    97:59:67:f5:1c:a2:37:8c:44:13:c5:0b:a2:8b:79:
    aa:b2:98:85:6d:58:8d:f0:32:33:ad:91:02:c9:5c:
    30:8f:52:66:34:2c:ce:82:3b:31:87:6f:11:e2:fb:
    c0:78:e1:ba:dc:3d:1c:1e:fb:32:4a:e4:02:e1:3d:
    f1:44:c8:fb:27:cf:d4:70:d8:f2:c1:59:c7:97:35:
    e6:58:37:48:da:0b:af:7d:af:e6:bf:b7:49:1d:27:
    4f:b8:f4:b2:d3:bc:58:c5:10:26:4b:02:b6:53:2b:
    51:99:6f:30:02:78:cf:df:16:5e:d7:bc:ad:ed:b1:
    d0:24:8b:3c:ac:d0:3c:25:7b:20:ed:20:d9:16:96:
    0f:a1:ce:df:2e:8a:35:58:ef:c3:2f:3f:7e:91:33:
    c9:38:40:88:d2:5f:fd:a9:fe:3b:a9:b3:26:43:e0:
    8d:91:f4:e5:be:9a:5f:6c:22:6a:24:51:de:58:29:
    a1
prime1:
    00:ef:16:cb:2e:f6:79:75:da:5f:ff:20:52:56:91:
    b2:b5:f5:3f:3f:35:8a:e4:bf:5c:3d:16:eb:40:f9:
    65:ea:22:a0:8a:60:0e:4d:42:e2:55:00:10:61:a0:
    83:2f:f7:ab:ff:38:d5:53:e6:b6:2b:1b:f5:1b:cc:
    97:fc:b5:c7:5e:da:52:6f:12:15:be:04:ea:b4:0b:
    86:61:3d:21:1a:40:85:b5:44:1a:be:22:46:cf:fa:
    f7:0e:71:a2:16:ef:a5:f0:53:f1:c3:e0:90:12:07:
    9e:c8:d1:b8:f5:3c:f2:03:b6:8e:0e:cc:16:9b:7a:
    3a:69:61:25:a6:d2:43:75:0f
prime2:
    00:c3:fe:e9:45:09:20:2d:a2:b3:2c:d8:9d:08:d0:
    cd:ab:fe:3f:f3:39:89:a0:c7:ba:19:52:c6:97:e1:
    d5:1c:ac:e7:ea:93:d9:7d:cb:48:db:4d:72:68:9e:
    4b:6f:23:da:60:3f:f6:d8:c9:43:95:e8:38:03:dc:
    d9:20:bc:a4:4b:74:11:a3:f7:b1:dc:7f:bb:7b:16:
    00:e2:a4:1c:2e:a5:c9:4f:c0:f9:a0:c9:4d:bc:58:
    85:e8:d5:87:bb:b5:89:b5:79:6d:ab:4e:6f:70:15:
    dd:47:2e:ac:dd:bc:b5:f9:25:f2:1f:8d:87:e8:7f:
    77:d0:02:04:47:5d:fa:e9:85
exponent1:
    31:7c:b9:4f:9e:2a:a3:cf:30:81:81:32:29:c2:fc:
    87:97:1c:a1:3b:b6:e5:04:0a:d6:86:30:e9:80:f5:
    ac:51:c0:83:03:c0:d2:13:1e:ff:d3:04:91:00:85:
    46:df:6f:d5:62:f1:1c:ed:ab:15:1f:33:4b:ae:bc:
    62:cd:49:58:03:be:7e:48:f3:01:22:c9:65:bc:e0:
    f2:ad:91:75:7a:97:72:5e:87:5e:85:7f:bc:ba:c8:
    7a:4f:e0:e9:f8:6e:93:60:fc:b0:bb:81:76:89:e7:
    3e:cf:d2:05:c8:b8:9b:36:25:0f:41:05:08:e7:72:
    c1:af:1e:f8:f9:9a:86:d7
exponent2:
    18:45:95:35:cb:6f:84:b7:45:61:24:62:2e:19:4d:
    9f:23:19:60:51:9b:cd:a1:6e:56:7c:7d:c3:89:60:
    0e:f1:0a:b7:6e:1f:dd:08:33:b9:94:d9:ba:43:00:
    2c:7f:50:27:e3:43:fa:8c:d2:25:da:60:35:7a:40:
    19:61:c3:26:e4:f4:da:4d:6e:65:54:1c:2f:9e:05:
    f6:0b:44:c2:32:1d:c0:16:b1:d3:4b:9a:a8:dc:7d:
    98:db:f8:b7:32:40:1f:8d:2e:1b:ac:d6:f8:16:7d:
    14:b7:9f:08:c6:b9:f2:64:d4:9b:3b:b7:bc:ff:2c:
    23:42:5c:ad:49:e2:2c:d1
coefficient:
    00:d4:8d:5d:76:05:df:68:50:f0:22:6d:fc:ba:9b:
    b5:06:91:71:f7:dd:c2:8c:ad:15:5a:6c:d6:52:25:
    49:f9:ae:fa:1b:b1:67:9f:f2:2e:e6:6d:01:6c:bd:
    39:be:52:88:05:de:11:b3:d3:a9:80:36:e2:a9:fc:
    00:26:0b:fc:0a:f6:0a:c9:18:db:61:d1:27:3f:e9:
    a1:0d:45:b8:c4:63:7f:ef:ea:b1:13:f4:54:5d:9a:
    a5:2e:32:9f:bb:bf:88:a0:92:21:18:5e:15:8f:30:
    fe:ef:20:cf:1c:7f:ad:29:2c:ff:11:26:a0:10:a0:
    3a:af:27:82:e4:24:a9:ad:61
writing RSA key
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
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