Extract RSA Public Key from public Certificate

I have public certificate with 2048 bit RSA public key for encrypt data. I need use openssl to extract this public key. Certyficate is PEM .cer file, and extracted key should be PEM too.

I use command to extract Public key

openssl x509 -pubkey -noout -in cert.cer > pubkey.pem

And output is:

-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr5qMxLWtgkId2oRUfnPf 6MX+UouBQKOzyfG0J9LW9yya8Nr+ilPTSPp+hSBL/TD1ijUZ2RClyegnrojOKHS7 kp1ZFDQJwmKSW660NKeLbyu2fbcJFBuDmSVK8XwRsUaIpf4eixqx5wAZg8q64kJ9 R9e07WPqrC2+8p2F/7zlKsZ263CWZ/xE0M6I4RiKSA24iaiGVrppnIrX1oX2v/dq UNaQL3uIgH1WWtf4apnDA7MVei2Iz2NjFzLJ569wxzO92XBUrcEkqA7Xx0or6xij h0oFKxsygNqHzK3qf56McRi/xy1VFrGQsiZL1u4+cdIAu5/tWaecLFl0UOBBbYxz 9QIDAQAB -----END PUBLIC KEY-----

And I try to convert it to RSA Public key with PKCS#1 padding and AN1 encoding

openssl x509 -inform PEM -in cert.cer -outform PEM -pubkey -nocert -out pubkeyRSA.pem

And output is

-----BEGIN RSA PUBLIC KEY----- MIIBCgKCAQEAr5qMxLWtgkId2oRUfnPf6MX+UouBQKOzyfG0J9LW9yya8Nr+ilPT SPp+hSBL/TD1ijUZ2RClyegnrojOKHS7kp1ZFDQJwmKSW660NKeLbyu2fbcJFBuD mSVK8XwRsUaIpf4eixqx5wAZg8q64kJ9R9e07WPqrC2+8p2F/7zlKsZ263CWZ/xE 0M6I4RiKSA24iaiGVrppnIrX1oX2v/dqUNaQL3uIgH1WWtf4apnDA7MVei2Iz2Nj FzLJ569wxzO92XBUrcEkqA7Xx0or6xijh0oFKxsygNqHzK3qf56McRi/xy1VFrGQ siZL1u4+cdIAu5/tWaecLFl0UOBBbYxz9QIDAQAB -----END RSA PUBLIC KEY-----

After decode it with Base64 and used to encrypt data, server show me an error, that encrypted key is wrong. Also, trying to load this keys to LockBox library for Delphi programs, it throws an exception "Wrong asymetric key"

The certificate is:

-----BEGIN CERTIFICATE----- MIIFGTCCBAGgAwIBAgITYwABPJqEcB3zrmJ2agABAAE8mjANBgkqhkiG9w0BAQwF ADBdMRIwEAYKCZImiZPyLGQBGRYCcGwxEzARBgoJkiaJk/IsZAEZFgNnb3YxEjAQ BgoJkiaJk/IsZAEZFgJtZjEeMBwGA1UEAxMVUmVzb3J0IEZpbmFuc293IEkxIENB MB4XDTIwMDcyMzExMjgyM1oXDTIyMDcyMzExMjgyM1owgZExCzAJBgNVBAYTAlBM MRQwEgYDVQQIEwttYXpvd2llY2tpZTERMA8GA1UEBxMIV2Fyc3phd2ExHzAdBgNV BAoMFk1pbmlzdGVyc3R3byBGaW5hbnPDs3cxHDAaBgNVBAsTE0FwbGlrYWNqZSBL cnl0eWN6bmUxGjAYBgNVBAMTEWV0dy10c3QubWYuZ292LnBsMIIBIjANBgkqhkiG 9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr5qMxLWtgkId2oRUfnPf6MX+UouBQKOzyfG0 J9LW9yya8Nr+ilPTSPp+hSBL/TD1ijUZ2RClyegnrojOKHS7kp1ZFDQJwmKSW660 NKeLbyu2fbcJFBuDmSVK8XwRsUaIpf4eixqx5wAZg8q64kJ9R9e07WPqrC2+8p2F /7zlKsZ263CWZ/xE0M6I4RiKSA24iaiGVrppnIrX1oX2v/dqUNaQL3uIgH1WWtf4 apnDA7MVei2Iz2NjFzLJ569wxzO92XBUrcEkqA7Xx0or6xijh0oFKxsygNqHzK3q f56McRi/xy1VFrGQsiZL1u4+cdIAu5/tWaecLFl0UOBBbYxz9QIDAQABo4IBmzCC AZcwDgYDVR0PAQH/BAQDAgWgMD4GCSsGAQQBgjcVBwQxMC8GJysGAQQBgjcVCIS3 mFWE7NgBhrmTDYO18X6DrtM2gUKEotdOhMuPDgIBZAIBDDAdBgNVHQ4EFgQUnFcp uSFJZYUBUkIplCvJERbNN98wHwYDVR0jBBgwFoAUfR+t1nzLSol4VWy6EPLtM9Yx us0wRgYDVR0fBD8wPTA7oDmgN4Y1aHR0cDovL3BraS5tZi5nb3YucGwvY2RwL3Jl c29ydF9maW5hbnNvd19pMV9jYSgxKS5jcmwwdQYIKwYBBQUHAQEEaTBnMD4GCCsG AQUFBzAChjJodHRwOi8vcGtpLm1mLmdvdi5wbC9haWEvcmVzb3J0X2ZpbmFuc293 X2kxX2NhLmNydDAlBggrBgEFBQcwAYYZaHR0cDovL3BraS5tZi5nb3YucGwvb2Nz cDAdBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwJwYJKwYBBAGCNxUKBBow GDAKBggrBgEFBQcDATAKBggrBgEFBQcDAjANBgkqhkiG9w0BAQwFAAOCAQEAHatd TuoQDgaydiNDZFPvbvnqO0wmD/sH54LkXnf49hXHcGQRjhBc7xsSDbKzxHEORJ08 wNWWJa0H8cbKCLytBq49FQnENYoi5sgMetM5XGqGSYHwFLTFyAf8A9af8rpqfAEY HwmL6iIjz6NmSD52i3owOaMCop4pyC+UU5CZDqBrYd10JY4bWRm5NPdjIga0+mDm hQYEkoW/AEQQam+VmyLsJFGtBl/kr5+EFIUFw8X2tFAubNTuxQsveLo91Q0lHtSt BMBJ7MYnJeFCGDeuPM65nJtCxexDfWfWSTZvGrdJSUooD5iFSZodCkReP7ZLiQmB dPB1oIhW3y/VUem3+A== -----END CERTIFICATE-----

Is it correctly trying to extract this key from the certificate?

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