Although not an issue with OpenSSL, the Linux programs md5sum and sha256sum are not supported on Mac OS X. A PEM file is simply a DER file that's been Base64 encoded. Copy link Author sivakrishna0205 commented Jan 23, 2018. The Payload file from the downloaded notification zip file is needed as well as the 64 character hex key string. To convert from one to the other you can use openssl with the -inform and -outform arguments. 9. If only the key is specified, the IV must additionally specified using the -iv option. openssl aes-128-cbc -d -in I00100000.ts -out decrypt_I00100000.ts -nosalt -iv -K I have hex IV from .m3u8, but how can I obtain hex from my .key file? Hi thanks for your information. ** The strange part is openssl provides the ability to output my PEM as -text which gives the hex. To generate such a key, use OpenSSL as: openssl rand 16 > myaes.key AES-256 expects a key of 256 bit, 32 byte. Remember to change the name of the input file to the file name of your private key. I give the hex formatted data like ASN.1 DER encoded but RSA Private key generated is different. I found that this OpenSSL command may help. JNI looks like the most effective option possibly round a very simple wrapper function but I'm not familiar with it. Hi Edwin, Is this key is PKCS#8 encrypted private key by DES-DES3-CBC? 2 Answers Active Oldest Votes. When both a key and a password are specified, the key given with the -K option will be used and … ** openssl ec -in k.pem -text. the actual key to use: this must be represented as a string comprised only of hex digits. 308202C6304006092A864886F70D01050D30...'. Actually, "openssl dsa" does understand keys in binary format by specifying the "-inform DER" option, as pointed by Dan Lukes in the Web version. With your private key in hand, you can use the following command to see the key's details, such as its modulus and its constituent primes. Each one takes one of PEM, DER or NET (a dated Netscape format, which you can ignore).. You can change a key from one format to the other with the openssl rsa command (assuming it's an RSA key, of course): Steve. Instead you can use md5 and shasum -a. Instead of -mac hmac -macopt hexkey:KEY use -hmac KEY. $ openssl pkey -in private-key.pem -text The above command yields the following output in my specific case. To generate such a key, use: openssl rand 32 > myaes.key – ingenue Oct 12 '17 at 11:57 | show 1 more comment. It needs to be 32 bytes, but hex convert gives me 64 bytes..key file in hex: Hex value shall be PKCS#1 private key formatted value which is ASN.1 DER encoded. If you have an older version of OpenSSL (pre 1.0) - no matter what operating system - then you may try the above commands instead. I could extend the openssl utility to support a hex key on the command line: it makes sense to do that anyway. 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