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Add optional SHA1 hashing for sign and verify functions base64 encoding and decoding.

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This commit is contained in:
netkas 2024-10-24 14:06:06 -04:00
parent 3b3271b94f
commit 5eeb06805a
1 changed files with 16 additions and 4 deletions
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20
src/Socialbox/Classes/Cryptography.php
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@ -54,7 +54,7 @@ class Cryptography
private static function pemToDer(string $pemKey): string private static function pemToDer(string $pemKey): string
{ {
$pemKey = preg_replace('/-----(BEGIN|END) [A-Z ]+-----/', '', $pemKey); $pemKey = preg_replace('/-----(BEGIN|END) [A-Z ]+-----/', '', $pemKey);
return base64_decode(str_replace(["\n", "\r", " "], '', $pemKey)); return Utilities::base64decode(str_replace(["\n", "\r", " "], '', $pemKey));
} }
/** /**
@ -66,7 +66,7 @@ class Cryptography
*/ */
private static function derToPem(string $derKey, string $type): string private static function derToPem(string $derKey, string $type): string
{ {
$formattedKey = chunk_split(base64_encode($derKey), 64); $formattedKey = chunk_split(Utilities::base64encode($derKey), 64);
$headerFooter = strtoupper($type) === self::PEM_PUBLIC_HEADER $headerFooter = strtoupper($type) === self::PEM_PUBLIC_HEADER
? "PUBLIC KEY" : "PRIVATE KEY"; ? "PUBLIC KEY" : "PRIVATE KEY";
@ -78,10 +78,11 @@ class Cryptography
* *
* @param string $content The content to be signed. * @param string $content The content to be signed.
* @param string $privateKey The private key used to sign the content. * @param string $privateKey The private key used to sign the content.
* @param bool $hashContent Whether to hash the content using SHA1 before signing it. Default is false.
* @return string The Base64 encoded signature of the content. * @return string The Base64 encoded signature of the content.
* @throws CryptographyException If the private key is invalid or if the content signing fails. * @throws CryptographyException If the private key is invalid or if the content signing fails.
*/ */
public static function signContent(string $content, string $privateKey): string public static function signContent(string $content, string $privateKey, bool $hashContent=false): string
{ {
$privateKey = openssl_pkey_get_private(self::derToPem(Utilities::base64decode($privateKey), self::PEM_PRIVATE_HEADER)); $privateKey = openssl_pkey_get_private(self::derToPem(Utilities::base64decode($privateKey), self::PEM_PRIVATE_HEADER));
if (!$privateKey) if (!$privateKey)
@ -89,6 +90,11 @@ class Cryptography
throw new CryptographyException('Invalid private key: ' . openssl_error_string()); throw new CryptographyException('Invalid private key: ' . openssl_error_string());
} }
if($hashContent)
{
$content = hash('sha1', $content);
}
if (!openssl_sign($content, $signature, $privateKey, self::HASH_ALGORITHM)) if (!openssl_sign($content, $signature, $privateKey, self::HASH_ALGORITHM))
{ {
throw new CryptographyException('Failed to sign content: ' . openssl_error_string()); throw new CryptographyException('Failed to sign content: ' . openssl_error_string());
@ -103,10 +109,11 @@ class Cryptography
* @param string $content The content to be verified. * @param string $content The content to be verified.
* @param string $signature The digital signature to verify against. * @param string $signature The digital signature to verify against.
* @param string $publicKey The public key to use for verification. * @param string $publicKey The public key to use for verification.
* @param bool $hashContent Whether to hash the content using SHA1 before verifying it. Default is false.
* @return bool Returns true if the content verification is successful, false otherwise. * @return bool Returns true if the content verification is successful, false otherwise.
* @throws CryptographyException If the public key is invalid or if the signature verification fails. * @throws CryptographyException If the public key is invalid or if the signature verification fails.
*/ */
public static function verifyContent(string $content, string $signature, string $publicKey): bool public static function verifyContent(string $content, string $signature, string $publicKey, bool $hashContent=false): bool
{ {
try try
{ {
@ -122,6 +129,11 @@ class Cryptography
throw new CryptographyException('Invalid public key: ' . openssl_error_string()); throw new CryptographyException('Invalid public key: ' . openssl_error_string());
} }
if($hashContent)
{
$content = hash('sha1', $content);
}
try try
{ {
return openssl_verify($content, Utilities::base64decode($signature), $publicKey, self::HASH_ALGORITHM) === 1; return openssl_verify($content, Utilities::base64decode($signature), $publicKey, self::HASH_ALGORITHM) === 1;