.cer

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• .cer

To view .cer files:

openssl x509 -in cerfile.cer -noout -text
unable to load certificate
1232435:error:09FFF06C:PEM routines:CRYPTO_internal:no start 
line:/System/Volumes/Data/SWE/macOS/BuildRoots/b8ff8433dc/Library/Caches/com.apple.xbs/Sources/libressl/libressl- 75/libressl-2.8/crypto/pem/pem_lib.c:684:Expecting: TRUSTED CERTIFICATE

openssl x509 -inform der -in cerfile.cer -noout -text

Related terms

• .pem
• .p12

See also

• Certificate: .pem, .ppk, .pfx, .p12, .cer, .crt, openssl pkcs12, .csr, .pub, PFX, PKCS, PKCS
• Certificate, CSR (PKCS10), /etc/letsencrypt/csr/, openssl req, X.509, [.pem, .cer, .csr], Kubernetes CertificateSigningRequest