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