php openssl, RSA私钥有PKCS#1和PKCS#8, 以及 GMSSL(sm2)均包含有公钥;
将PKCS#1私钥由BASE转为HEX后, 提取从24位开始到522个字符,转为BASE就是公钥;
将PKCS#8私钥由BASE转为HEX后, 提取从76位开始到522个字符,转为BASE就是公钥;
-----BEGIN RSA PRIVATE KEY----- MIIEowIBAAKCAQEAk7mpX9YSPdY/3rqDJ4vIlSlTJMN+q2aQtC5yWNewQXb0lawe Sdg0g8rNgWNPehAWz4h5uzjg89ETNYAYWCGVScxSuwYhqvCM20SK6TrzscH22kdN QUAKJWtdT8LOqGvtQ7YP5b+fwuLKkPW6X7BbXk908Y32P1DktDAYqhjZWxRBkTsO WDSYBSf5XRIhDfCoktI0muH4QIr903lCxgk9GJRaGBzr5oxhQaG+BaxToWSk6nDS 5Uf0s3sbhcLor+IgZ911HZLiAgGmVqdETCP5vq1hpNwB+DAnXodVP4rsviUrNory vDyhyK1cO+jUTLuTpVOAISh3mA9OU0MMicIYiwIDAQABAoIBAAPtySpqWBva6eHz le9kUVZePf7ZUDIgzTJtlc71FZP4JPMiG8AdBvCGYUbSrFdzvBeS6qHnFlyFr/wZ Rwx5AC5xR7X/qL+SHDzsqsEfN0IABZ+yi8RzfpGWNGodpT9nd2z4l52lpgsZ2wdV 8bn/x75PYK3X97ehYCPGr7E+bfF1IxKnWWA19FUQ13HTGc//i5A7NmUzGTpkbgkg CrhniJWpGQrA63V2dofVlcCE42c4cR/skp7HJTeePwQkTn7DiLqM6eqya+rf0lai GWOZnpj2AgMJyBGFNhjFQmFf5f1nifNI/jWboOKI5jeb+KExrFFUB/Bu/vm2zhGW NlAGJbECgYEA1JlSmlLqyYZboD9PXwBK6h6bqW9fhNrM85ivm652oPMWt3NM5B4n tXDST8AyyBqVTIgnbK7iiel4XLElng6QngUA5kDZ82hkft/NJQ1zDuCvrs1Wb/7/ T1KjO511j4763XX2C8IUrB1rP31IOjrjDp/H+whORCZBTntwGPve3dMCgYEAseH2 QURlMTDuDdG/SU8ZsPl1wQMMAhYKWeZ4mfRuxkVDE5xyS0nMziPsbO8qieUgEyck KQ/NjQuYUOmR44PK5rArXD+Es6kS6kxXZtD5vM+CLqYz5J5hzxcARxIbVQ/NuLOq Rep257EqNVg6owE0Yxf/83o9Iif1r+Lx9NdnT2kCgYEAt9uE8UuGGxRkBxjZZnpV T1V7HzPfMoEawAwqyoM9uoGgArTnKVze0G4qo6e/AwjiVxZkqfwwlD5hxh+5PZCx Bsei+H3bP0LnrkWUH1gbSiGMLasM9rxbRdlcq4DIG4f2cjHCwHZu9E5Y4sZRAXLN zGboRrPvI8bFsb7UufaQzdsCgYA4o0zoXSGnNwAlMEqqyd/RRKykpxa0t1XWaBaw Vm7K/JSt8ttFc5sda7zEtqYhv+2li4ns9RYqua1m3efQvE7nguJbffH/zm6yYVpW 52UNJDk8JzlQqslTyewRtQc031JOZA5sMopnnTZmQ9BvxFtszeB2Is7CSFznAuit X8SKOQKBgFFcg2CvZGLEEIWxOZ/gduyCnvF07+xn8n8HLzBiESlliQ6NPaRImhs1 ak2vQltFS1HFTdotVoePtCoHxvD6z54Onvqy8BTmVN07P6It75TWTQTTGhQcLZtQ m6LaANCDqDcRtLRQt4j8qdKyLdmXgJSIrtjgAbnhzoRmblSWgtrC -----END RSA PRIVATE KEY-----
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAk7mpX9YSPdY/3rqDJ4vI lSlTJMN+q2aQtC5yWNewQXb0laweSdg0g8rNgWNPehAWz4h5uzjg89ETNYAYWCGV ScxSuwYhqvCM20SK6TrzscH22kdNQUAKJWtdT8LOqGvtQ7YP5b+fwuLKkPW6X7Bb Xk908Y32P1DktDAYqhjZWxRBkTsOWDSYBSf5XRIhDfCoktI0muH4QIr903lCxgk9 GJRaGBzr5oxhQaG+BaxToWSk6nDS5Uf0s3sbhcLor+IgZ911HZLiAgGmVqdETCP5 vq1hpNwB+DAnXodVP4rsviUrNoryvDyhyK1cO+jUTLuTpVOAISh3mA9OU0MMicIY iwIDAQAB -----END PUBLIC KEY-----
验证地址:
http://tool.chacuo.net/cryptrsakeyvalid