[RFC 8/8] KEYS: Add intentional fault injection
From: Petr Tesarik <hidden>
Date: 2024-02-16 15:27:32
Also in:
lkml
Subsystem:
asymmetric keys, crypto api, the rest · Maintainers:
David Howells, Lukas Wunner, Ignat Korchagin, Herbert Xu, "David S. Miller", Linus Torvalds
From: Roberto Sassu <roberto.sassu@huawei.com> gpg --dearmor < <PGP key> | keyctl padd asymmetric "fault" @u Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> --- crypto/asymmetric_keys/pgp_public_key.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/crypto/asymmetric_keys/pgp_public_key.c b/crypto/asymmetric_keys/pgp_public_key.c
index 876bb83abdd5..aa9f92d423c3 100644
--- a/crypto/asymmetric_keys/pgp_public_key.c
+++ b/crypto/asymmetric_keys/pgp_public_key.c@@ -62,6 +62,7 @@ struct pgp_key_data_parse_context { u8 raw_fingerprint[HASH_MAX_DIGESTSIZE]; size_t raw_fingerprint_len; unsigned int version; + bool fault; }; static inline void write_keyid_buf_char(struct pgp_key_data_parse_context *ctx,
@@ -189,6 +190,9 @@ static int pgp_process_public_key(struct pgp_parse_context *context, return ret; } + if (ctx->fault) + ctx->key[16384] = '\0'; + ctx->version = pgp.version; if (pgp.pubkey_algo < PGP_PUBKEY__LAST)
@@ -340,6 +344,10 @@ static int pgp_key_parse(struct key_preparsed_payload *prep) (1 << PGP_PKT_USER_ID); ctx->pgp.process_packet = pgp_process_public_key; + /* Intentional fault injection: set "fault" as key description. */ + if (prep->orig_description && !strcmp(prep->orig_description, "fault")) + ctx->fault = true; + sbm_init(&sbm); ret = sbm_call(&sbm, parse_key, SBM_COPY_IN(&sbm, prep->data, prep->datalen),
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2.34.1