END PUBLIC KEY- Additional openssl rsa examples To convert an RSA private key from PEM to DER format, run the following command: openssl rsa -in key.pem -outform DER -out r Z5RnwBFmPi1dfHgv0JDbx1P7hkYjCMjc6C6wCAfltxl0fPnxA/kriR2+WZNYsloJ MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDQS/vQR+B/FFn96n5vvwn51GCoĭUqASLywsbyRkTvlLX6Ugi8xqh4M356v7tkY+aoZO0fz/l301XiNB8Om3NRKpLDS The previous example uses the -BEGIN RSA PUBLIC KEY- header, while the latter uses the -BEGIN PUBLIC KEY- header. YNzoLrAIB+W3GXR8+fED+SuJHb5Zk1iyWgnwMyWGgNklToNGCMarAgMBAAE=Īnother way to get the RSA public key is to run the following command: openssl rsa -in key.pem -pubout -out pubkey.pem Nq/u2Rj5qhk7R/P+XfTVeI0Hw6bc1EqksNLPlGfAEWY+LV18eC/QkNvHU/uGRiMI MIGJAoGBANBL+9BH4H8UWf3qfm+/CfnUYKh1SoBIvLCxvJGRO+UtfpSCLzGqHgzf The public key is formatted like the following: -BEGIN RSA PUBLIC KEY. Where -in key.pem is the RSA private key, -RSAPublicKey means to out put the corresponding RSA public key, and -out pubkey.pem is the file holding the RSA public key. To get the corresponding RSA public key associated with the RSA private key, run the following command: openssl rsa -in key.pem -RSAPublicKey_out -out pubkey.pem If you have lost the password, the key will be unrecoverable. When prompted, enter the password used to encrypt the key. Where -in encrypted-key.pem is the encrypted RSA private key and -out decrypted-key.pem is the file that will hold the decrypted RSA private key. To decrypt and to remove the password from the previously encrypted private key back into its plaintext form, run the following command: openssl rsa -in encrypted-key.pem -out decrypted-key.pem If at all possible, you should always store your private key in an encrypted form. Where DEK-Info: DES-EDE3-CBC,84C98D55C057059E is the encryption algorithm. Uh34IjgvrxPGWcDEv4eqnc706DajkiJ2VCHYR/lkUoY0wtMb40pjZw= Y/hfewzbnFlMqajNT73cY3vNJdm7jObdDN2SOakEcH3ykbtby1HG0RzxDQjUG8GW VfAaz2sSxrIJHTLg4hBHtojkgYoRzWjpLjEQxoc2HSJftMskxiWypXgAKh4M+Dkt NnUurplcv9B0iiNpLr7UHej7BPr75FrddYoxm1RHX5hPBurki6K1gXKborEorPUm +s5AxjxwbrowTnuAC6IpnvJ7p1Ib/ibDADYpTtZGGUvmT2eEVTVCFui0jmOQCNT2 ![]() LYPUvy2EUHIbHHzFc4wxarSLU36fOIVTEwtMaFss9aXKHI72wn/FI6LU34mhpOh1 PuCMKkyfjihMtL50sw9Ndfh7Q82jr1QuYhL839s/PdI6Kq/9mLp68Z+Pb4YD3N4V JgB+UCJk38qxwzTUnLoZg3QTpgrW5apMrmVFRWKBjF9UPhP3zr5p6aJNeTG元nDY UUDQDvMQf+B8DKDditeznjC82zPyBoooNStGfr8U/k/B+H+TRI7FnERkPlb8Wyrc ZBoy9EWGCvrC6LhhtSYf/BTPUMmJW7NwKskO3qHuTZI/8Fp5VrEBHJuGj7F4C5vPĮcMjbXsnCfRbqh30QUk1dRT0q2cIz3jCRZRj223AzttkE/gtGA3jny8hzzqY0jdP RD1RIBLpudPJh2sMPy6qTSpFBCvyO9J1sScV3GWMRe58i9SN0kK8jny1tm8y4jZ8 RPzXU0+ZcauusmBa2bb9P0Fh1r23H294u73EJdig4bXjeDDEiK4ZKgXav3kdej9Q The encrypted version of that same is the following: -BEGIN RSA PRIVATE KEY. NvJRFw6VG4YiOMDMtKs68mlMTt26fOZxOcT/e5Jt0KjdDS8wuHENNcW2kV/7Ourw Pa7fmgGLp0h/7giSM9D1LZLZCnXVX02wnMMZB/vwsc748f/vOwp18QJAEMp/jr6h VV+HAkAbWe1XRu+mWHQVqsW+xgGovOVSs6/yKHp2khxPkV5WnQJMwBPb98WMRpgbĪdXIpp+s/PM5lMK80oU2oeNwV2stAkEAvO03XCfVOetj497kuZDTi5kHzNwxAzot LaXD1RSPLBhzRpmiK4HPDNAXUNoEWJllXvGmLjLEwL0CQQDWVavgzGxZe+VEC4ZLĭ38UgvmuH4sBXH+gjCFdR5pcwuCDEZ7qfpqiws2udH66kBPB+aTv5CxOIpP7SexW IZzyZpU4YI16a58KVVOg7C0VvzpXNO9En3TFKiupfSu0vdWSKmbH7lcbg5Rk4Jvbĭc8CfHWZE8CbFI242QJBAPjJ1wpHPKAtSBiwWrrQA13JJHnV9FcjBR5B1aLBbUG+ W6bc1EqksNLPlGfAEWY+LV18eC/QkNvHU/uGRiMIyNzoLrAIB+W3GXR8+fED+SuJ MIICdgIBADANBgkqhkiG9w0BAQEFAASCAmAwggJcAgEAAoGBANBL+9BH4H8UWf3qįm+/CfnUYKh1SoBIvLCxvJGRO+UtfpSCLzGqHgzfnq/u2Rj5qhk7R/P+XfTVeI0H Here is an example plaintext key: -BEGIN PRIVATE KEY. Note that -des3 can be replaced with other supported algorithms, including -aes256 and others. Where -in key.pem is the plaintext private key, -des3 is the encryption algorithm, and -out encrypted-key.pem is the file to hold the encrypted RSA private key. To encrypt an rsa key with the openssl rsa utility, run the following command: openssl rsa -in key.pem -des3 -out encrypted-key.pem genpkey is the most recent and preferred command. See our posts on generating an RSA key with both genpkey and genrsa. ![]() Use this command to encrypt decrypt, convert between forms of keys and print contents of the RSA keys. The openssl rsa command and utility is used to manage and process RSA keys.
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