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Example 43 · V2 · RSA 1024 (legacy)

Version 2 key (PGP 2.x, RFC 1991): MD5 fingerprint of 32 hex digits, RSA only, no subkeys, unlimited validity; the primary key certifies, signs and encrypts. IDEA protection and MD5 signatures are obsolete. Only GnuPG 1.4 with weak-digest allowances or historical PGP read it.

Key overview

Key versionV2
SpecificationRFC 1991 · RFC 2440
StatusObsolete – legacy, kept for historical compatibility only
Primary key (certify, sign)RSA 1024 · ID 1
Encryption subkeyNone: version 2 and 3 keys have no subkeys, the primary RSA key also encrypts (C/S/E derived from the algorithm)
Fingerprint6BC0D98BBD116770A8490E45FD1AC24C
Passphrase of the private keysynthetic-key-password

Algorithms and use

RSA 1024: RSA with a modulus of 1024 bits, considered breakable today. Kept only for historical compatibility; GnuPG accepts it, Sequoia and rPGP-based tools reject keys below 2048 bits, and so does the keys2 keyserver.

Public key

The public key with its user ID and self-signature. Version 2 and 3 keys have no subkeys: the same RSA key verifies signatures and is used to encrypt to this test identity.

Download → 522 bytes

-----BEGIN PGP PUBLIC KEY BLOCK-----

mQCPAmr3la4AAAEEALEREzp6i293syqxXyvpu7STdlnKmyaNxwAyJbVmzQuK0D/0
jXG68yBISCMUeYn+wsemu27FKB5W0bgiOFfhoT6SJvpZNtJjmT/gmje8l6y9Ml7X
ByyDUhSeW5hy2f6sXDKB4I8ZQQW9zBJc5XYMjcVpSvg2p7cpIgRNlXYTFl+HABEB
AAG0GUNILUogbWF0cml4IDQzLXYyLXJzYTEwMjSJAJUCBRBq95WuBE2VdhMWX4cB
AY3tBACR9kPU8WUizEr8NMMJpuhQPfT9n5nLp5E2fsBAkok4OTmdmF3Km2axxrcw
BjNbJ6m6cEBoXqLAh13m8RUAnLHSgv1lovyq/ysyhlmZxrtJ7D9isrLfkxvsMn6F
nx9ASP40Z6HTHdqXVqXk2Ir0Ksspcpd6nk1rmz3J0vhXQe08Tg==
=N7kq
-----END PGP PUBLIC KEY BLOCK-----

Private key

The private key, protected with the passphrase shown above. Published for testing only: anyone can use it.

Download → 983 bytes

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-----BEGIN PGP PRIVATE KEY BLOCK-----
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=h3n3
-----END PGP PRIVATE KEY BLOCK-----

Revocation certificate

A pre-generated key compromise certificate, signature class 0x20 defined by RFC 1991 ("This is my key, and I have revoked it") and implemented by PGP 2.6. Importing it marks the key as revoked.

Download → 725 bytes

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-----BEGIN PGP PUBLIC KEY BLOCK-----
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=tjaP
-----END PGP PUBLIC KEY BLOCK-----

Signature of test_1MB.bin

Detached ASCII-armored signature of test_1MB.bin made with this key in CH-J Tools. Save it as test_1MB.bin.asc next to the test file.

Download → 273 bytes

-----BEGIN PGP SIGNATURE-----

iQCVAgUAaveVrgRNlXYTFl+HAQEGewP/Y5DuFAG2/8mkfq15mzDoMsiRqUP5/DK2
XfDpdSjyGS5r9Uzpbuk/MqL2M1TscfVQvjDoihIbcdUk6yZeWnP9SIXoplr3F90b
40JUSTnSoj91urqMplNSIXetoVFT4B4OH7ZnTmrmDoTcac+UIeGDAdwa6jrXj01D
5KJXGL/Hhng=
=g/kk
-----END PGP SIGNATURE-----

Verify the signature

Version 3 and 2 keys need GnuPG 1.4 (gpg1) with explicit allowance for MD5, or historical PGP, or CH-J Tools. Use a temporary GNUPGHOME so the test key does not enter your real keyring:

export GNUPGHOME="$(mktemp -d)"
gpg1 --allow-weak-digest-algos --import pgp-example-43-public.asc
gpg1 --allow-weak-digest-algos --verify test_1MB.bin.asc test_1MB.bin

Download test_1MB.bin →