Convert DER formatted private key file to PEM form

openssl private-key pem der

tkpl · Mar 8, 2013 · Viewed 9.5k times · Source

I have a .prv file which is probably DER formatted private key file. This file is used to certificate Cable Modem.

I want to convert this file to PEM formatted one. I tried with openssl tool but none of below commands works.

openssl x509 -inform der -in FILENAME.prv -out FILENAME.key
openssl rsa -inform der -in FILENAME.prv -out FILENAME.key
openssl pkcs8 -inform der -in FILENAME.prv -out FILENAME.key

Here is some beginning of the .prv file contents.

00000000h: 30 82 02 76 02 01 00 30 0D 06 09 2A 86 48 86 F7 ; 0?v...0...*낷놑
00000010h: 0D 01 01 01 05 00 04 82 02 60 30 82 02 5C 02 01 ; .......?`0?\..
00000020h: 00 02 81 81 00 BB 0F 6E DE 49 59 13 4A 44 12 AF ; ..걖.?n?Y.JD.?
00000030h: 84 F0 B7 13 18 C8 F8 43 AE 09 A6 8A 6C 9B F0 AC ; 꾭?.힉C?쫲l쏊?
00000040h: 90 1F 48 C2 75 75 41 78 74 FA DD 08 19 E0 C0 BF ; ?H혋uAxt玹..敾?
00000050h: CC 98 D7 72 B7 C3 8C 4A 2A B9 BC 95 B6 9A 54 17 ; ??련똉*뭡빒숿.
00000060h: 7C 5A 57 78 E1 68 87 69 18 56 8E 5D F4 D5 36 46 ; |ZWx?뇁.V?添6F
00000070h: DF 0F 6D 54 FC 30 B6 16 AD AF D2 C6 A8 D0 C1 F7 ; ?mT???盧ⓓ직

Is there anything more I can try??

Convert DER formatted private key file to PEM form

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