为什么我无法从PHP中的X509证书中获取公钥？

Question

下面的PHP代码打印出这样的警告：

警告：openssl_csr_get_public_key（）：提供的资源不是/home/swissbtc/www/bitcoins.ch/index.php有效的OpenSSL的X​​.509 CSR资源上线49

代码：

$Configs = array(  
     'digest_alg' => 'sha1', 
     'x509_extensions' => 'v3_ca', 
     'req_extensions' => 'v3_req', 
     'private_key_bits' => 2048, 
     'private_key_type' => OPENSSL_KEYTYPE_RSA, 
     'encrypt_key' => true, 
     'encrypt_key_cipher' => OPENSSL_CIPHER_3DES 
); 

//generate cert 
$dn  = array('commonName' => 'test'); 
$privkey = openssl_pkey_new($Configs); 
$csr  = openssl_csr_new($dn, $privkey, $Configs); 
$cert  = openssl_csr_sign($csr, null, $privkey, 365, $Configs); 

//try to get public key 
$publicKey = openssl_csr_get_public_key($cert); //line 49 

//try again to get the public key 
openssl_x509_export($cert, $certout); 
$publicKey = openssl_csr_get_public_key($certout); 

注：第一$公钥（49行）是EM pty和第二个$ publicKey（第53行）获取布尔值“false”

我的代码有什么问题？

Answer 1

这个工作对我来说：

$Configs = array(  
    'digest_alg' => 'sha1', 
    'x509_extensions' => 'v3_ca', 
    'req_extensions' => 'v3_req', 
    'private_key_bits' => 2048, 
    'private_key_type' => OPENSSL_KEYTYPE_RSA, 
    'encrypt_key' => true, 
    'encrypt_key_cipher' => OPENSSL_CIPHER_3DES 
); 

//generate cert 
$dn  = array('commonName' => 'test'); 
$privkey = openssl_pkey_new($Configs); 
$csr  = openssl_csr_new($dn, $privkey, $Configs); 
$cert  = openssl_csr_sign($csr, null, $privkey, 365, $Configs); 
$publicKey = openssl_pkey_get_public($cert); 

var_dump($publicKey);