2025-03-14 21:59:59 -06:00
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# openssl genpkey
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> OpenSSL command to generate asymmetric key pairs.
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2026-02-18 06:55:01 -07:00
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> More information: <https://docs.openssl.org/master/man1/openssl-genpkey/>.
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2025-03-14 21:59:59 -06:00
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- Generate an RSA private key of 2048 bits, saving it to a specific file:
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2026-02-18 06:55:01 -07:00
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`openssl genpkey -algorithm rsa -pkeyopt rsa_keygen_bits:{{2048}} -out {{path/to/private.key}}`
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2025-03-14 21:59:59 -06:00
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- Generate an elliptic curve private key using the curve `prime256v1`, saving it to a specific file:
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2026-02-18 06:55:01 -07:00
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`openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:{{prime256v1}} -out {{path/to/private.key}}`
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2025-03-14 21:59:59 -06:00
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- Generate an `ED25519` elliptic curve private key, saving it to a specific file:
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2026-02-18 06:55:01 -07:00
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`openssl genpkey -algorithm {{ED25519}} -out {{path/to/private.key}}`
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