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openssl_encrypt
Examples
openssl_encrypt
PHP 5 >= 5.3.0, PHP 7, PHP 8
openssl_encrypt - Encrypts data
Manual
Code Examples
Example #1 AES Authenticated Encryption in GCM mode example for PHP 7.1+
<?php //$key should have been previously generated in a cryptographically safe way, like openssl_random_pseudo_bytes $plaintext = "message to be encrypted"; $cipher = "aes-128-gcm"; if (in_array($cipher, openssl_get_cipher_methods())) { $ivlen = openssl_cipher_iv_length($cipher); $iv = openssl_random_pseudo_bytes($ivlen); $ciphertext = openssl_encrypt($plaintext, $cipher, $key, $options=0, $iv, $tag); //store $cipher, $iv, and $tag for decryption later $original_plaintext = openssl_decrypt($ciphertext, $cipher, $key, $options=0, $iv, $tag); echo $original_plaintext."\n"; }
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PHP Version:
8.2.10
8.1.23
8.0.30
8.3.0RC1
8.3.0beta2
8.3.0beta1
8.3.0alpha3
8.3.0alpha2
8.3.0alpha1
7.4.33
7.3.33
7.2.34
7.1.33
7.0.33
5.6.40
5.5.38
5.4.45
5.3.29
5.2.17
5.1.6
5.0.5
4.4.9
4.3.11
4.2.3
4.1.2
4.0.6
8.2.10
8.2.9
8.2.8
8.2.7
8.2.6
8.2.5
8.2.4
8.2.3
8.2.2
8.2.1
8.2.0
8.1.23
8.1.22
8.1.21
8.1.20
8.1.19
8.1.18
8.1.17
8.1.16
8.1.15
8.1.14
8.1.13
8.1.12
8.1.11
8.1.10
8.1.9
8.1.8
8.1.7
8.1.6
8.1.5
8.1.4
8.1.3
8.1.2
8.1.1
8.1.0
8.0.30
8.0.29
8.0.28
8.0.27
8.0.26
8.0.25
8.0.24
8.0.23
8.0.22
8.0.21
8.0.20
8.0.19
8.0.18
8.0.17
8.0.16
8.0.15
8.0.14
8.0.13
8.0.12
8.0.11
8.0.10
8.0.9
8.0.8
8.0.7
8.0.6
8.0.5
8.0.4
8.0.3
8.0.2
8.0.1
8.0.0
7.4.33
7.4.32
7.4.30
7.4.29
7.4.28
7.4.27
7.4.26
7.4.25
7.4.24
7.4.23
7.4.22
7.4.21
7.4.20
7.4.19
7.4.18
7.4.17
7.4.16
7.4.15
7.4.14
7.4.13
7.4.12
7.4.11
7.4.10
7.4.9
7.4.8
7.4.7
7.4.6
7.4.5
7.4.4
7.4.3
7.4.2
7.4.1
7.4.0
7.3.33
7.3.32
7.3.31
7.3.30
7.3.29
7.3.28
7.3.27
7.3.26
7.3.25
7.3.24
7.3.23
7.3.22
7.3.21
7.3.20
7.3.19
7.3.18
7.3.17
7.3.16
7.3.15
7.3.14
7.3.13
7.3.12
7.3.11
7.3.10
7.3.9
7.3.8
7.3.7
7.3.6
7.3.5
7.3.4
7.3.3
7.3.2
7.3.1
7.3.0
7.2.34
7.2.33
7.2.32
7.2.31
7.2.30
7.2.29
7.2.28
7.2.27
7.2.26
7.2.25
7.2.24
7.2.23
7.2.22
7.2.21
7.2.20
7.2.19
7.2.18
7.2.17
7.2.16
7.2.15
7.2.14
7.2.13
7.2.12
7.2.11
7.2.10
7.2.9
7.2.8
7.2.7
7.2.6
7.2.5
7.2.4
7.2.3
7.2.2
7.2.1
7.2.0
7.1.33
7.1.32
7.1.31
7.1.30
7.1.29
7.1.28
7.1.27
7.1.26
7.1.25
7.1.24
7.1.23
7.1.22
7.1.21
7.1.20
7.1.19
7.1.18
7.1.17
7.1.16
7.1.15
7.1.14
7.1.13
7.1.12
7.1.11
7.1.10
7.1.9
7.1.8
7.1.7
7.1.6
7.1.5
7.1.4
7.1.3
7.1.2
7.1.1
7.1.0
7.0.33
7.0.32
7.0.31
7.0.30
7.0.29
7.0.28
7.0.27
7.0.26
7.0.25
7.0.24
7.0.23
7.0.22
7.0.21
7.0.20
7.0.19
7.0.18
7.0.17
7.0.16
7.0.15
7.0.14
7.0.13
7.0.12
7.0.11
7.0.10
7.0.9
7.0.8
7.0.7
7.0.6
7.0.5
7.0.4
7.0.3
7.0.2
7.0.1
7.0.0
5.6.40
5.6.39
5.6.38
5.6.37
5.6.36
5.6.35
5.6.34
5.6.33
5.6.32
5.6.31
5.6.30
5.6.29
5.6.28
5.6.27
5.6.26
5.6.25
5.6.24
5.6.23
5.6.22
5.6.21
5.6.20
5.6.19
5.6.18
5.6.17
5.6.16
5.6.15
5.6.14
5.6.13
5.6.12
5.6.11
5.6.10
5.6.9
5.6.8
5.6.7
5.6.6
5.6.5
5.6.4
5.6.3
5.6.2
5.6.1
5.6.0
5.5.38
5.5.37
5.5.36
5.5.35
5.5.34
5.5.33
5.5.32
5.5.31
5.5.30
5.5.29
5.5.28
5.5.27
5.5.26
5.5.25
5.5.24
5.5.23
5.5.22
5.5.21
5.5.20
5.5.19
5.5.18
5.5.17
5.5.16
5.5.15
5.5.14
5.5.13
5.5.12
5.5.11
5.5.10
5.5.9
5.5.8
5.5.7
5.5.6
5.5.5
5.5.4
5.5.3
5.5.2
5.5.1
5.5.0
5.4.45
5.4.44
5.4.43
5.4.42
5.4.41
5.4.40
5.4.39
5.4.38
5.4.37
5.4.36
5.4.35
5.4.34
5.4.33
5.4.32
5.4.31
5.4.30
5.4.29
5.4.28
5.4.27
5.4.26
5.4.25
5.4.24
5.4.23
5.4.22
5.4.21
5.4.20
5.4.19
5.4.18
5.4.17
5.4.16
5.4.15
5.4.14
5.4.13
5.4.12
5.4.11
5.4.10
5.4.9
5.4.8
5.4.7
5.4.6
5.4.5
5.4.4
5.4.3
5.4.2
5.4.1
5.4.0
5.3.29
5.3.28
5.3.27
5.3.26
5.3.25
5.3.24
5.3.23
5.3.22
5.3.21
5.3.20
5.3.19
5.3.18
5.3.17
5.3.16
5.3.15
5.3.14
5.3.13
5.3.12
5.3.11
5.3.10
5.3.9
5.3.8
5.3.7
5.3.6
5.3.5
5.3.4
5.3.3
5.3.2
5.3.1
5.3.0
5.2.17
5.2.16
5.2.15
5.2.14
5.2.13
5.2.12
5.2.11
5.2.10
5.2.9
5.2.8
5.2.7
5.2.6
5.2.5
5.2.4
5.2.3
5.2.2
5.2.1
5.2.0
5.1.6
5.1.5
5.1.4
5.1.3
5.1.2
5.1.1
5.1.0
5.0.5
5.0.4
5.0.3
4.4.9
4.4.8
4.4.7
4.4.6
4.4.5
4.4.4
4.4.3
4.4.2
4.4.1
4.4.0
4.3.11
4.3.10
4.3.9
4.3.8
4.3.7
4.3.6
4.3.5
4.3.2
4.3.1
4.3.0
4.2.3
4.2.2
4.2.1
4.2.0
4.1.2
4.1.1
4.1.0
4.0.6
8.2.0RC7
8.2.0RC6
8.2.0RC5
8.2.0RC4
8.2.0RC3
8.2.0RC2
8.2.0beta3
8.2.0beta1
Example #2 AES Authenticated Encryption example prior to PHP 7.1
<?php //$key previously generated safely, ie: openssl_random_pseudo_bytes $plaintext = "message to be encrypted"; $ivlen = openssl_cipher_iv_length($cipher="AES-128-CBC"); $iv = openssl_random_pseudo_bytes($ivlen); $ciphertext_raw = openssl_encrypt($plaintext, $cipher, $key, $options=OPENSSL_RAW_DATA, $iv); $hmac = hash_hmac('sha256', $ciphertext_raw, $key, $as_binary=true); $ciphertext = base64_encode( $iv.$hmac.$ciphertext_raw ); //decrypt later.... $c = base64_decode($ciphertext); $ivlen = openssl_cipher_iv_length($cipher="AES-128-CBC"); $iv = substr($c, 0, $ivlen); $hmac = substr($c, $ivlen, $sha2len=32); $ciphertext_raw = substr($c, $ivlen+$sha2len); $original_plaintext = openssl_decrypt($ciphertext_raw, $cipher, $key, $options=OPENSSL_RAW_DATA, $iv); $calcmac = hash_hmac('sha256', $ciphertext_raw, $key, $as_binary=true); if (hash_equals($hmac, $calcmac))// timing attack safe comparison { echo $original_plaintext."\n"; }
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PHP Version:
8.2.10
8.1.23
8.0.30
8.3.0RC1
8.3.0beta2
8.3.0beta1
8.3.0alpha3
8.3.0alpha2
8.3.0alpha1
7.4.33
7.3.33
7.2.34
7.1.33
7.0.33
5.6.40
5.5.38
5.4.45
5.3.29
5.2.17
5.1.6
5.0.5
4.4.9
4.3.11
4.2.3
4.1.2
4.0.6
8.2.10
8.2.9
8.2.8
8.2.7
8.2.6
8.2.5
8.2.4
8.2.3
8.2.2
8.2.1
8.2.0
8.1.23
8.1.22
8.1.21
8.1.20
8.1.19
8.1.18
8.1.17
8.1.16
8.1.15
8.1.14
8.1.13
8.1.12
8.1.11
8.1.10
8.1.9
8.1.8
8.1.7
8.1.6
8.1.5
8.1.4
8.1.3
8.1.2
8.1.1
8.1.0
8.0.30
8.0.29
8.0.28
8.0.27
8.0.26
8.0.25
8.0.24
8.0.23
8.0.22
8.0.21
8.0.20
8.0.19
8.0.18
8.0.17
8.0.16
8.0.15
8.0.14
8.0.13
8.0.12
8.0.11
8.0.10
8.0.9
8.0.8
8.0.7
8.0.6
8.0.5
8.0.4
8.0.3
8.0.2
8.0.1
8.0.0
7.4.33
7.4.32
7.4.30
7.4.29
7.4.28
7.4.27
7.4.26
7.4.25
7.4.24
7.4.23
7.4.22
7.4.21
7.4.20
7.4.19
7.4.18
7.4.17
7.4.16
7.4.15
7.4.14
7.4.13
7.4.12
7.4.11
7.4.10
7.4.9
7.4.8
7.4.7
7.4.6
7.4.5
7.4.4
7.4.3
7.4.2
7.4.1
7.4.0
7.3.33
7.3.32
7.3.31
7.3.30
7.3.29
7.3.28
7.3.27
7.3.26
7.3.25
7.3.24
7.3.23
7.3.22
7.3.21
7.3.20
7.3.19
7.3.18
7.3.17
7.3.16
7.3.15
7.3.14
7.3.13
7.3.12
7.3.11
7.3.10
7.3.9
7.3.8
7.3.7
7.3.6
7.3.5
7.3.4
7.3.3
7.3.2
7.3.1
7.3.0
7.2.34
7.2.33
7.2.32
7.2.31
7.2.30
7.2.29
7.2.28
7.2.27
7.2.26
7.2.25
7.2.24
7.2.23
7.2.22
7.2.21
7.2.20
7.2.19
7.2.18
7.2.17
7.2.16
7.2.15
7.2.14
7.2.13
7.2.12
7.2.11
7.2.10
7.2.9
7.2.8
7.2.7
7.2.6
7.2.5
7.2.4
7.2.3
7.2.2
7.2.1
7.2.0
7.1.33
7.1.32
7.1.31
7.1.30
7.1.29
7.1.28
7.1.27
7.1.26
7.1.25
7.1.24
7.1.23
7.1.22
7.1.21
7.1.20
7.1.19
7.1.18
7.1.17
7.1.16
7.1.15
7.1.14
7.1.13
7.1.12
7.1.11
7.1.10
7.1.9
7.1.8
7.1.7
7.1.6
7.1.5
7.1.4
7.1.3
7.1.2
7.1.1
7.1.0
7.0.33
7.0.32
7.0.31
7.0.30
7.0.29
7.0.28
7.0.27
7.0.26
7.0.25
7.0.24
7.0.23
7.0.22
7.0.21
7.0.20
7.0.19
7.0.18
7.0.17
7.0.16
7.0.15
7.0.14
7.0.13
7.0.12
7.0.11
7.0.10
7.0.9
7.0.8
7.0.7
7.0.6
7.0.5
7.0.4
7.0.3
7.0.2
7.0.1
7.0.0
5.6.40
5.6.39
5.6.38
5.6.37
5.6.36
5.6.35
5.6.34
5.6.33
5.6.32
5.6.31
5.6.30
5.6.29
5.6.28
5.6.27
5.6.26
5.6.25
5.6.24
5.6.23
5.6.22
5.6.21
5.6.20
5.6.19
5.6.18
5.6.17
5.6.16
5.6.15
5.6.14
5.6.13
5.6.12
5.6.11
5.6.10
5.6.9
5.6.8
5.6.7
5.6.6
5.6.5
5.6.4
5.6.3
5.6.2
5.6.1
5.6.0
5.5.38
5.5.37
5.5.36
5.5.35
5.5.34
5.5.33
5.5.32
5.5.31
5.5.30
5.5.29
5.5.28
5.5.27
5.5.26
5.5.25
5.5.24
5.5.23
5.5.22
5.5.21
5.5.20
5.5.19
5.5.18
5.5.17
5.5.16
5.5.15
5.5.14
5.5.13
5.5.12
5.5.11
5.5.10
5.5.9
5.5.8
5.5.7
5.5.6
5.5.5
5.5.4
5.5.3
5.5.2
5.5.1
5.5.0
5.4.45
5.4.44
5.4.43
5.4.42
5.4.41
5.4.40
5.4.39
5.4.38
5.4.37
5.4.36
5.4.35
5.4.34
5.4.33
5.4.32
5.4.31
5.4.30
5.4.29
5.4.28
5.4.27
5.4.26
5.4.25
5.4.24
5.4.23
5.4.22
5.4.21
5.4.20
5.4.19
5.4.18
5.4.17
5.4.16
5.4.15
5.4.14
5.4.13
5.4.12
5.4.11
5.4.10
5.4.9
5.4.8
5.4.7
5.4.6
5.4.5
5.4.4
5.4.3
5.4.2
5.4.1
5.4.0
5.3.29
5.3.28
5.3.27
5.3.26
5.3.25
5.3.24
5.3.23
5.3.22
5.3.21
5.3.20
5.3.19
5.3.18
5.3.17
5.3.16
5.3.15
5.3.14
5.3.13
5.3.12
5.3.11
5.3.10
5.3.9
5.3.8
5.3.7
5.3.6
5.3.5
5.3.4
5.3.3
5.3.2
5.3.1
5.3.0
5.2.17
5.2.16
5.2.15
5.2.14
5.2.13
5.2.12
5.2.11
5.2.10
5.2.9
5.2.8
5.2.7
5.2.6
5.2.5
5.2.4
5.2.3
5.2.2
5.2.1
5.2.0
5.1.6
5.1.5
5.1.4
5.1.3
5.1.2
5.1.1
5.1.0
5.0.5
5.0.4
5.0.3
4.4.9
4.4.8
4.4.7
4.4.6
4.4.5
4.4.4
4.4.3
4.4.2
4.4.1
4.4.0
4.3.11
4.3.10
4.3.9
4.3.8
4.3.7
4.3.6
4.3.5
4.3.2
4.3.1
4.3.0
4.2.3
4.2.2
4.2.1
4.2.0
4.1.2
4.1.1
4.1.0
4.0.6
8.2.0RC7
8.2.0RC6
8.2.0RC5
8.2.0RC4
8.2.0RC3
8.2.0RC2
8.2.0beta3
8.2.0beta1
Function openssl_encrypt:
Manual
Code Examples
OpenSSL Functions
openssl_cipher_iv_length
openssl_cms_decrypt
openssl_cms_encrypt
openssl_cms_read
openssl_cms_sign
openssl_cms_verify
openssl_csr_export_to_file
openssl_csr_export
openssl_csr_get_public_key
openssl_csr_get_subject
openssl_csr_new
openssl_csr_sign
openssl_decrypt
openssl_dh_compute_key
openssl_digest
openssl_encrypt
openssl_error_string
openssl_free_key
openssl_get_cert_locations
openssl_get_cipher_methods
openssl_get_curve_names
openssl_get_md_methods
openssl_get_privatekey
openssl_get_publickey
openssl_open
openssl_pbkdf2
openssl_pkcs12_export_to_file
openssl_pkcs12_export
openssl_pkcs12_read
openssl_pkcs7_decrypt
openssl_pkcs7_encrypt
openssl_pkcs7_read
openssl_pkcs7_sign
openssl_pkcs7_verify
openssl_pkey_derive
openssl_pkey_export_to_file
openssl_pkey_export
openssl_pkey_free
openssl_pkey_get_details
openssl_pkey_get_private
openssl_pkey_get_public
openssl_pkey_new
openssl_private_decrypt
openssl_private_encrypt
openssl_public_decrypt
openssl_public_encrypt
openssl_random_pseudo_bytes
openssl_seal
openssl_sign
openssl_spki_export_challenge
openssl_spki_export
openssl_spki_new
openssl_spki_verify
openssl_verify
openssl_x509_check_private_key
openssl_x509_checkpurpose
openssl_x509_export_to_file
openssl_x509_export
openssl_x509_fingerprint
openssl_x509_free
openssl_x509_parse
openssl_x509_read
openssl_x509_verify
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(74209)
json_decode
(64525)
iconv
(55008)
utf8_decode
(48512)
preg_replace_callback
(47353)
preg_match_all
(47160)
str_replace
(43743)
strtotime
(39399)