crypto_krb5..._is_the_data(9)

💅 NAME 💅

okay so welcome to the Kernel API Manual, bestie — this is the page for crypto_krb5..._is_the_data(9), and we're gonna find the data in a decrypted message together 💖

crypto_krb5_where_is_the_data — find the data in a decrypted message. No cap, that's literally the whole assignment.

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🌸 SYNOPSIS 🌸

int crypto_krb5_where_is_the_data (const struct krb5_enctype *krb5 ,
       enum krb5_crypto_mode mode , size_t *_offset , size_t *_len );

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🎀 ARGUMENTS 🎀

• krb5 — The encoding to use.
• mode — Mode of operation.
• _offset — Offset of the secure blob in the buffer; updated to data offset.
• _len — The length of the secure blob; updated to data length.

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🦋 DESCRIPTION 🦋

okay so this function finds the offset and size of the data in a secure message so that this information can be used in the metadata buffer which will get added to the digest by crypto_krb5_verify_mic.

It's giving “where is the data?” but make it kernel crypto, and honestly? iconic behavior ✨

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🔥 RETURN 🔥

Returns 0 if successful, -EBADMSG if the message is too short or -EINVAL if the mode is unsupported.

bestie if you get -EBADMSG, the message was too short; if you get -EINVAL, the mode is unsupported. fr fr.

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👑 SEE ALSO 👑

Kernel file: ./crypto/krb5/krb5_api.c

The whole squad, periodt:

• crypto_krb5_find_enctype(9)
• crypto_krb5_how_much_buffer(9)
• crypto_krb5_how_much_data(9)
• crypto_krb5_check_data_len(9)
• crypto_krb5_prepare_encryption(9)
• crypto_krb5_prepare_checksum(9)
• crypto_krb5_encrypt(9)
• crypto_krb5_decrypt(9)
• crypto_krb5_get_mic(9)
• crypto_krb5_verify_mic(9)

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mwah 💋 this lil page comes from ./crypto/krb5, dated October 2026 — ty for reading, bestie, ily! 🫶🎀