PHP 生成公钥私钥,加密解密,签名验签

时间:2019-09-16
本文章向大家介绍PHP 生成公钥私钥,加密解密,签名验签,主要包括PHP 生成公钥私钥,加密解密,签名验签使用实例、应用技巧、基本知识点总结和需要注意事项,具有一定的参考价值,需要的朋友可以参考一下。

test_encry.php

<?php
//创建私钥,公钥
//create_key();
//要加密内容
$str = "test_str";
//加密
$encrypt_str = test_encrypt($str);
//解密
$decrypt_str = test_decrypt($encrypt_str);
//echo $decrypt_str;exit;
//签名
$sign_str = sign ( $decrypt_str );
// echo $sign_str;exit;
//验签
$res = verify ( $decrypt_str, $sign_str );

var_dump ( $res );
exit ();



//创建秘钥对
function create_key(){
    //配置信息
    //配置需要用到环境配置文件 openssl.cnf,这里文件地址如下
    $config_path = "D:\ApacheServer\Apache\conf\openssl.cnf";
    $config = array(
            "digest_alg"       => "sha512",
            "private_key_bits" => 4096,                // 字节数  512 1024 2048  4096 等 ,不能加引号,此处长度与加密的字符串长度有关系
            "private_key_type" => OPENSSL_KEYTYPE_RSA, // 加密类型
            'config'           => $config_path
    );
    $new_key = openssl_pkey_new($config);
    if ( $new_key == false ){
        return false;
    }
    //提取私钥
    //$private_key 这里作为引用变量
    openssl_pkey_export($new_key, $private_key, null, $config);
    
    //生成公钥
    $public_key = openssl_pkey_get_details($new_key);
    // var_dump($public_key);
    $public_key = $public_key["key"];
    
    //显示数据
    //var_dump($public_key);     //公钥
    //var_dump($private_key);    //私钥
    file_put_contents("./testpublic.pem", $public_key);
    file_put_contents("./testprivate.pem", $private_key);
    
    openssl_free_key($new_key);
}






// 数据接收方创建一套密钥对,把公钥给发送方(一或多个发送方),发送方用公钥加密数据,发给接收方,接收方用私钥解密获取数据
// 接受方的密钥对
/**
  公钥加密
 @param $str 要加密的明文
 */
function test_encrypt($str) {
    $cert_file = "./testpublic.pem";
    // 读取公钥内容
    $public_key = file_get_contents ( $cert_file );
    // 转成openssl对象
    $public_key = openssl_get_publickey ( $public_key );
    // 进行加密,$encrypt_str 为引用变量
    openssl_public_encrypt ( $str, $encrypt_str, $public_key );
    // base64转码
    $encrypt_str = base64_encode ( $encrypt_str );
    return $encrypt_str;
}


/**
  私钥解密
 @param $encrypt_str 要解密的密文
 */
function test_decrypt($encrypt_str) {
    $cert_file = "./testprivate.pem";
    // 读取私钥内容
    $private_key = file_get_contents ( $cert_file );
    // 转成openssl对象
    $private_key = openssl_get_privatekey ( $private_key );
    // base64解码
    $encrypt_str = base64_decode ( $encrypt_str );
    openssl_private_decrypt ( $encrypt_str, $decrypt_str, $private_key );
    
    return $decrypt_str;
}



// 数据发送方创建一套密钥对,把公钥给接收方,发送方用私钥签名数据,发给接收方。接收方将“解密后的明文、收到的签名、发送方生成的公钥”三个数据一起来验签,验证通过则表示发送方是真实有效的(签名就是为排除冒充发送方发信息的行为)
// 发送方的密钥对(这里为方便,用同一套密钥对)
/**
  私钥签名
 @param $plain 要签名的明文
 */
function sign($plain) {
    // $log = new Logger();
    try {
        // 用户私钥证书
        $cert_file = "./testprivate.pem";
        $priv_key = file_get_contents ( $cert_file );
        $pkeyid = openssl_get_privatekey ( $priv_key );
        
        if (! is_resource ( $pkeyid )) {
            return FALSE;
        }
        // compute signature
        openssl_sign ( $plain, $signature, $pkeyid, OPENSSL_ALGO_SHA256 );
        // free the key from memory
        openssl_free_key ( $pkeyid );
        // $log->logInfo("Signature string for:".$signature);
        return base64_encode ( $signature );
    } catch ( Exception $e ) {
        // $log->logInfo("Signature attestation failure".$e->getMessage());
    }
}

/**
公钥验签
@param $plain 验签明文            
@param $signature 验签密文            
 */
function verify($plain, $signature) {
    $cert_file = "./testpublic.pem";
    $signature = base64_decode ( $signature );
    $cert = file_get_contents ( $cert_file );
    $pubkeyid = openssl_get_publickey ( $cert );
    if (! is_resource ( $pubkeyid )) {
        return FALSE;
    }
    $ok = openssl_verify ( $plain, $signature, $pubkeyid, OPENSSL_ALGO_SHA256 );
    @openssl_free_key ( $pubkeyid );
    if ($ok == 1) {
        return TRUE;
    } elseif ($ok == 0) {
        return FALSE;
    } else {
        return FALSE;
    }
    return FALSE;
}

testprivate.pem

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

testpublic.pem

-----BEGIN PUBLIC KEY-----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-----END PUBLIC KEY-----

openssl.cnf

#
# OpenSSL example configuration file.
# This is mostly being used for generation of certificate requests.
#

# This definition stops the following lines choking if HOME isn't
# defined.
HOME            = .
RANDFILE        = $ENV::HOME/.rnd

# Extra OBJECT IDENTIFIER info:
#oid_file        = $ENV::HOME/.oid
oid_section        = new_oids

# To use this configuration file with the "-extfile" option of the
# "openssl x509" utility, name here the section containing the
# X.509v3 extensions to use:
# extensions        = 
# (Alternatively, use a configuration file that has only
# X.509v3 extensions in its main [= default] section.)

[ new_oids ]

# We can add new OIDs in here for use by 'ca', 'req' and 'ts'.
# Add a simple OID like this:
# testoid1=1.2.3.4
# Or use config file substitution like this:
# testoid2=${testoid1}.5.6

# Policies used by the TSA examples.
tsa_policy1 = 1.2.3.4.1
tsa_policy2 = 1.2.3.4.5.6
tsa_policy3 = 1.2.3.4.5.7

####################################################################
[ ca ]
default_ca    = CA_default        # The default ca section

####################################################################
[ CA_default ]

dir        = ./demoCA        # Where everything is kept
certs        = $dir/certs        # Where the issued certs are kept
crl_dir        = $dir/crl        # Where the issued crl are kept
database    = $dir/index.txt    # database index file.
#unique_subject    = no            # Set to 'no' to allow creation of
                    # several ctificates with same subject.
new_certs_dir    = $dir/newcerts        # default place for new certs.

certificate    = $dir/cacert.pem     # The CA certificate
serial        = $dir/serial         # The current serial number
crlnumber    = $dir/crlnumber    # the current crl number
                    # must be commented out to leave a V1 CRL
crl        = $dir/crl.pem         # The current CRL
private_key    = $dir/private/cakey.pem# The private key
RANDFILE    = $dir/private/.rand    # private random number file

x509_extensions    = usr_cert        # The extentions to add to the cert

# Comment out the following two lines for the "traditional"
# (and highly broken) format.
name_opt     = ca_default        # Subject Name options
cert_opt     = ca_default        # Certificate field options

# Extension copying option: use with caution.
# copy_extensions = copy

# Extensions to add to a CRL. Note: Netscape communicator chokes on V2 CRLs
# so this is commented out by default to leave a V1 CRL.
# crlnumber must also be commented out to leave a V1 CRL.
# crl_extensions    = crl_ext

default_days    = 365            # how long to certify for
default_crl_days= 30            # how long before next CRL
default_md    = default        # use public key default MD
preserve    = no            # keep passed DN ordering

# A few difference way of specifying how similar the request should look
# For type CA, the listed attributes must be the same, and the optional
# and supplied fields are just that :-)
policy        = policy_match

# For the CA policy
[ policy_match ]
countryName        = match
stateOrProvinceName    = match
organizationName    = match
organizationalUnitName    = optional
commonName        = supplied
emailAddress        = optional

# For the 'anything' policy
# At this point in time, you must list all acceptable 'object'
# types.
[ policy_anything ]
countryName        = optional
stateOrProvinceName    = optional
localityName        = optional
organizationName    = optional
organizationalUnitName    = optional
commonName        = supplied
emailAddress        = optional

####################################################################
[ req ]
default_bits        = 1024
default_keyfile     = privkey.pem
distinguished_name    = req_distinguished_name
attributes        = req_attributes
x509_extensions    = v3_ca    # The extentions to add to the self signed cert

# Passwords for private keys if not present they will be prompted for
# input_password = secret
# output_password = secret

# This sets a mask for permitted string types. There are several options. 
# default: PrintableString, T61String, BMPString.
# pkix     : PrintableString, BMPString (PKIX recommendation before 2004)
# utf8only: only UTF8Strings (PKIX recommendation after 2004).
# nombstr : PrintableString, T61String (no BMPStrings or UTF8Strings).
# MASK:XXXX a literal mask value.
# WARNING: ancient versions of Netscape crash on BMPStrings or UTF8Strings.
string_mask = utf8only

# req_extensions = v3_req # The extensions to add to a certificate request

[ req_distinguished_name ]
countryName            = Country Name (2 letter code)
countryName_default        = AU
countryName_min            = 2
countryName_max            = 2

stateOrProvinceName        = State or Province Name (full name)
stateOrProvinceName_default    = Some-State

localityName            = Locality Name (eg, city)

0.organizationName        = Organization Name (eg, company)
0.organizationName_default    = Internet Widgits Pty Ltd

# we can do this but it is not needed normally :-)
#1.organizationName        = Second Organization Name (eg, company)
#1.organizationName_default    = World Wide Web Pty Ltd

organizationalUnitName        = Organizational Unit Name (eg, section)
#organizationalUnitName_default    =

commonName            = Common Name (e.g. server FQDN or YOUR name)
commonName_max            = 64

emailAddress            = Email Address
emailAddress_max        = 64

# SET-ex3            = SET extension number 3

[ req_attributes ]
challengePassword        = A challenge password
challengePassword_min        = 4
challengePassword_max        = 20

unstructuredName        = An optional company name

[ usr_cert ]

# These extensions are added when 'ca' signs a request.

# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.

basicConstraints=CA:FALSE

# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.

# This is OK for an SSL server.
# nsCertType            = server

# For an object signing certificate this would be used.
# nsCertType = objsign

# For normal client use this is typical
# nsCertType = client, email

# and for everything including object signing:
# nsCertType = client, email, objsign

# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment

# This will be displayed in Netscape's comment listbox.
nsComment            = "OpenSSL Generated Certificate"

# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer

# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move

# Copy subject details
# issuerAltName=issuer:copy

#nsCaRevocationUrl        = http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName

# This is required for TSA certificates.
# extendedKeyUsage = critical,timeStamping

[ v3_req ]

# Extensions to add to a certificate request

basicConstraints = CA:FALSE
keyUsage = nonRepudiation, digitalSignature, keyEncipherment

[ v3_ca ]


# Extensions for a typical CA


# PKIX recommendation.

subjectKeyIdentifier=hash

authorityKeyIdentifier=keyid:always,issuer

# This is what PKIX recommends but some broken software chokes on critical
# extensions.
#basicConstraints = critical,CA:true
# So we do this instead.
basicConstraints = CA:true

# Key usage: this is typical for a CA certificate. However since it will
# prevent it being used as an test self-signed certificate it is best
# left out by default.
# keyUsage = cRLSign, keyCertSign

# Some might want this also
# nsCertType = sslCA, emailCA

# Include email address in subject alt name: another PKIX recommendation
# subjectAltName=email:copy
# Copy issuer details
# issuerAltName=issuer:copy

# DER hex encoding of an extension: beware experts only!
# obj=DER:02:03
# Where 'obj' is a standard or added object
# You can even override a supported extension:
# basicConstraints= critical, DER:30:03:01:01:FF

[ crl_ext ]

# CRL extensions.
# Only issuerAltName and authorityKeyIdentifier make any sense in a CRL.

# issuerAltName=issuer:copy
authorityKeyIdentifier=keyid:always

[ proxy_cert_ext ]
# These extensions should be added when creating a proxy certificate

# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.

basicConstraints=CA:FALSE

# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.

# This is OK for an SSL server.
# nsCertType            = server

# For an object signing certificate this would be used.
# nsCertType = objsign

# For normal client use this is typical
# nsCertType = client, email

# and for everything including object signing:
# nsCertType = client, email, objsign

# This is typical in keyUsage for a client certificate.
# keyUsage = nonRepudiation, digitalSignature, keyEncipherment

# This will be displayed in Netscape's comment listbox.
nsComment            = "OpenSSL Generated Certificate"

# PKIX recommendations harmless if included in all certificates.
subjectKeyIdentifier=hash
authorityKeyIdentifier=keyid,issuer

# This stuff is for subjectAltName and issuerAltname.
# Import the email address.
# subjectAltName=email:copy
# An alternative to produce certificates that aren't
# deprecated according to PKIX.
# subjectAltName=email:move

# Copy subject details
# issuerAltName=issuer:copy

#nsCaRevocationUrl        = http://www.domain.dom/ca-crl.pem
#nsBaseUrl
#nsRevocationUrl
#nsRenewalUrl
#nsCaPolicyUrl
#nsSslServerName

# This really needs to be in place for it to be a proxy certificate.
proxyCertInfo=critical,language:id-ppl-anyLanguage,pathlen:3,policy:foo

####################################################################
[ tsa ]

default_tsa = tsa_config1    # the default TSA section

[ tsa_config1 ]

# These are used by the TSA reply generation only.
dir        = ./demoCA        # TSA root directory
serial        = $dir/tsaserial    # The current serial number (mandatory)
crypto_device    = builtin        # OpenSSL engine to use for signing
signer_cert    = $dir/tsacert.pem     # The TSA signing certificate
                    # (optional)
certs        = $dir/cacert.pem    # Certificate chain to include in reply
                    # (optional)
signer_key    = $dir/private/tsakey.pem # The TSA private key (optional)

default_policy    = tsa_policy1        # Policy if request did not specify it
                    # (optional)
other_policies    = tsa_policy2, tsa_policy3    # acceptable policies (optional)
digests        = md5, sha1        # Acceptable message digests (mandatory)
accuracy    = secs:1, millisecs:500, microsecs:100    # (optional)
clock_precision_digits  = 0    # number of digits after dot. (optional)
ordering        = yes    # Is ordering defined for timestamps?
                # (optional, default: no)
tsa_name        = yes    # Must the TSA name be included in the reply?
                # (optional, default: no)
ess_cert_id_chain    = no    # Must the ESS cert id chain be included?
                # (optional, default: no)

 

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