What are the differences between . pem, . cer, and . der? The OpenSSL command line contains lots of options to convert between PEM and DER, print out high level certificate information or parse the ASN 1 to get a low level view of what is in there Details Like most ASN 1 structures, DER encoded certificate always starts off with a byte 30 which is the tag encoding of an ASN 1 SEQUENCE
openssl der files importing into java keystore - Stack Overflow convert your certificate in a DER format : openssl x509 -outform der -in certificate pem -out certificate der import into the keystore keytool -import -alias your-alias -keystore cacerts -file certificate der This brings me now to my question Is it possible to import the private and public key into the keystore without a certificate?
error while converting pem encoded certificate to der using openssl Additionally, you'll want to add -----BEGIN CERTIFICATE----- as the first line and -----END CERTIFICATE----- as the last line At this point the OpenSSL CLI will allow you to parse and convert the file to DER Be sure those begin end lines have five dashes to start end them or else you'll still get errors
OpenSsl cannot read DER formatted certificate - Stack Overflow My cert is in DER format I have confirmed this by: Using openssl command line: openssl x509 -text -noout -inform DER -in Cert cer: displays certificate openssl x509 -text -noout -in Cert cer: displays unable to load certificate openssl x509 -inform der -in Cert cer -out Cert pem: converts DER to PEM I am using the below code to read:
Identifying whether a certificate is der encoded or base 64 encoded Informational since this got a search hit - All X 509 certs pretty much use Distinguished Encoding Rules (DER) as the defacto encoding standard to store certificate data in Abstract Syntax Notation One (ASN 1) Base64 is a form of binary-to-text encoding (usually in ASCII text) This makes it "transmission" friendly
DER encoding - How to convert implicit tag to explicit tag That is, the DER encoding of the EXPLICIT SET OF tag, rather than of the IMPLICIT [0] tag, MUST be included along with the length and content octets of the value I've done a lot of searching around, but I can't figure out exactly what the standard is calling for