CmdID

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openssl-genpkey

Generate asymmetric key pairs. tldr-pages

On several platforms

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Several platforms

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Generate an RSA private key of 2048 bits, saving it to a specific file

openssl genpkey -algorithm rsa -pkeyopt rsa_keygen_bits:2048 -out path/to/private.keyIdentify

Generate an elliptic curve private key using the curve prime256v1, saving it to a specific file

openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:prime256v1 -out path/to/private.keyIdentify

Generate an ED25519 elliptic curve private key, saving it to a specific file

openssl genpkey -algorithm ED25519 -out path/to/private.keyIdentify