OPENSSL-EC(1ssl) OpenSSL OPENSSL-EC(1ssl) (NAME) openssl-ec - EC (SYNOPSIS) openssl ec [-help] [-inform DER|PEM|P12|ENGINE] [-outform DER|PEM] [-in filename|uri] [-passin arg] [-out filename] [-passout arg] [-des] [-des3] [-idea] [-text] [-noout] [-param_out] [-pubin] [-pubout] [-conv_form arg] [-param_enc arg] [-no_public] [-check] [-engine id] [-provider name] [-provider-path path] [-provparam [name:]key=value] [-propquery propq] (DESCRIPTION) openssl-ec(1) EC ( ) . . : (OpenSSL) 'SEC 1: Elliptic Curve Cryptography' (http://www.secg.org) . EC OpenSSL PKCS#8 openssl-pkcs8(1) . (OPTIONS) -help . -inform DER|PEM|P12|ENGINE . openssl-format-options(1) . -outform DER|PEM PEM . openssl-format-options(1) . SEC1 PKCS#8 . SubjectPublicKeyInfo IETF RFC 3280 . -in filename|uri . . -out filename . . . -passin arg, -passout arg . arg openssl-passphrase-options(1) . -des|-des3|-idea DES triple DES IDEA OpenSSL . . (plain text) . . PEM . -text . -noout . -param_out . -pubin . . . -pubout . . . -conv_form arg (octet strings) . : compressed uncompressed ( ) hybrid. X9.62 . : () compressed (binary curves) OPENSSL_EC_BIN_PT_COMP . -param_enc arg . : named_curve ec OID explicit ec ( EC RFC 3279 ). named_curve . : implicitlyCA RFC 3279 OpenSSL . -no_public . -check EC . -engine id "Engine Options" openssl(1) . . -provider name -provider-path path -provparam [name:]key=value -propquery propq "Provider Options" openssl(1) provider(7) property(7) . openssl-pkey(1) . (EXAMPLES) openssl-pkey(1) . triple DES: openssl ec -in key.pem -des3 -out keyout.pem PEM DER: openssl ec -in key.pem -outform DER -out keyout.der : openssl ec -in key.pem -text -noout : openssl ec -in key.pem -pubout -out pubkey.pem explicit: openssl ec -in key.pem -param_enc explicit -out keyout.pem compressed: openssl ec -in key.pem -conv_form compressed -out keyout.pem (SEE ALSO) openssl(1) openssl-pkey(1) openssl-ecparam(1) openssl-dsa(1) openssl-rsa(1) (HISTORY) -engine OpenSSL 3.0 . -conv_form -no_public OpenSSL 3.0 engine . (COPYRIGHT) Copyright 2003-2023 The OpenSSL Project Authors. All Rights Reserved. . (Apache License 2.0) (<<>>). . LICENSE . 3.6.4 2026-08-25 OPENSSL-EC(1ssl)