PHP RSA 报错 openssl_sign(): supplied key param cannot be coerced into a private key

PHP RSA 报错
openssl_sign(): supplied key param cannot be coerced into a private key
原因：
RSA 的秘钥一般都有固定换行格式，是不是这种情况导致的呢
按照此格式试试，问题竟然顺利解决

私钥

$str='你的私钥（改成一行）';
$str        = chunk_split($str, 64, "\n");$key = "-----BEGIN RSA PRIVATE KEY-----\n$str-----END RSA PRIVATE KEY-----\n";$signature = '';if (openssl_sign($data, $signature, $key, OPENSSL_ALGO_MD5)) {echo base64_encode($signature);}

公钥

$data='内容';
$str='你的公钥（改成一行）';
$str               = chunk_split($str, 64, "\n");$key = "-----BEGIN PUBLIC KEY-----\n$str-----END PUBLIC KEY-----\n";$signature = "";if (openssl_verify(base64_decode($data), $signature, $key, OPENSSL_ALGO_MD5) == 1) {echo $signature;}

案例：
http://php.net/manual/en/function.openssl-sign.php 官方案例改造了一下
官方的公钥私钥格式太标准，所以要改造一下。
因为我们拿到的公钥私钥有可能就是一行的

$data = "Beeeeer is really good.. hic...";
$private_key = <<<EOD
-----BEGIN RSA PRIVATE KEY-----
MIIBOgIBAAJBANDiE2+Xi/WnO+s120NiiJhNyIButVu6zxqlVzz0wy2j4kQVUC4Z
RZD80IY+4wIiX2YxKBZKGnd2TtPkcJ/ljkUCAwEAAQJAL151ZeMKHEU2c1qdRKS9
sTxCcc2pVwoAGVzRccNX16tfmCf8FjxuM3WmLdsPxYoHrwb1LFNxiNk1MXrxjH3R
6QIhAPB7edmcjH4bhMaJBztcbNE1VRCEi/bisAwiPPMq9/2nAiEA3lyc5+f6DEIJ
h1y6BWkdVULDSM+jpi1XiV/DevxuijMCIQCAEPGqHsF+4v7Jj+3HAgh9PU6otj2n
Y79nJtCYmvhoHwIgNDePaS4inApN7omp7WdXyhPZhBmulnGDYvEoGJN66d0CIHra
I2SvDkQ5CmrzkW5qPaE2oO7BSqAhRZxiYpZFb5CI
-----END RSA PRIVATE KEY-----
EOD;
$public_key = <<<EOD
-----BEGIN PUBLIC KEY-----
MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBANDiE2+Xi/WnO+s120NiiJhNyIButVu6
zxqlVzz0wy2j4kQVUC4ZRZD80IY+4wIiX2YxKBZKGnd2TtPkcJ/ljkUCAwEAAQ==
-----END PUBLIC KEY-----
EOD;/
//上面是官方的  改造一下
///
//例如我们拿到的公钥私钥是一行的
//私钥
$str='MIIBOgIBAAJBANDiE2+Xi/WnO+s120NiiJhNyIButVu6zxqlVzz0wy2j4kQVUC4ZRZD80IY+4wIiX2YxKBZKGnd2TtPkcJ/ljkUCAwEAAQJAL151ZeMKHEU2c1qdRKS9sTxCcc2pVwoAGVzRccNX16tfmCf8FjxuM3WmLdsPxYoHrwb1LFNxiNk1MXrxjH3R6QIhAPB7edmcjH4bhMaJBztcbNE1VRCEi/bisAwiPPMq9/2nAiEA3lyc5+f6DEIJh1y6BWkdVULDSM+jpi1XiV/DevxuijMCIQCAEPGqHsF+4v7Jj+3HAgh9PU6otj2nY79nJtCYmvhoHwIgNDePaS4inApN7omp7WdXyhPZhBmulnGDYvEoGJN66d0CIHraI2SvDkQ5CmrzkW5qPaE2oO7BSqAhRZxiYpZFb5CI';
$str        = chunk_split($str, 64, "\n");
$private_key = "-----BEGIN RSA PRIVATE KEY-----\n$str-----END RSA PRIVATE KEY-----\n";//公钥
$str='MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBANDiE2+Xi/WnO+s120NiiJhNyIButVu6zxqlVzz0wy2j4kQVUC4ZRZD80IY+4wIiX2YxKBZKGnd2TtPkcJ/ljkUCAwEAAQ==';
$str               = chunk_split($str, 64, "\n");$public_key = "-----BEGIN PUBLIC KEY-----\n$str-----END PUBLIC KEY-----\n";$binary_signature = "";openssl_sign($data, $binary_signature, $private_key, OPENSSL_ALGO_SHA1);// Check signature
$ok = openssl_verify($data, $binary_signature, $public_key, OPENSSL_ALGO_SHA1);
echo "check #1: ";
if ($ok == 1) {echo "signature ok (as it should be)\n";
} elseif ($ok == 0) {echo "bad (there's something wrong)\n";
} else {echo "ugly, error checking signature\n";
}$ok = openssl_verify('tampered'.$data, $binary_signature, $public_key, OPENSSL_ALGO_SHA1);
echo "check #2: ";
if ($ok == 1) {echo "ERROR: Data has been tampered, but signature is still valid! Argh!\n";
} elseif ($ok == 0) {echo "bad signature (as it should be, since data has beent tampered)\n";
} else {echo "ugly, error checking signature\n";
}

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