* cipher/pubkey-util.c (_gcry_pk_util_data_to_mpi): Add support for
PUBKEY_FLAG_BYTE_STRING.
* src/cipher.h (PUBKEY_FLAG_BYTE_STRING): New.
Signed-off-by: NIIBE Yutaka <[email protected]>
---
cipher/pubkey-util.c | 33 ++++++++++++++++++++++++++++++++-
src/cipher.h | 1 +
2 files changed, 33 insertions(+), 1 deletion(-)
diff --git a/cipher/pubkey-util.c b/cipher/pubkey-util.c
index 37a9f05b..e9d98c35 100644
--- a/cipher/pubkey-util.c
+++ b/cipher/pubkey-util.c
@@ -687,7 +687,7 @@ _gcry_pk_util_free_encoding_ctx (struct pk_encoding_ctx *ctx)
HASH-ALGO is specific to OAEP, PSS and EDDSA.
- LABEL is specific to OAEP.
+ LABEL is used for OAEP, RAW or RFC6979.
SALT-LENGTH is for PSS, it is limited to 16384 bytes.
@@ -738,6 +738,37 @@ _gcry_pk_util_data_to_mpi (gcry_sexp_t input, gcry_mpi_t *ret_mpi,
rc = GPG_ERR_INV_OBJ; /* none or both given */
else if (unknown_flag)
rc = GPG_ERR_INV_FLAG;
+ else if (ctx->encoding == PUBKEY_ENC_RAW
+ && (ctx->flags & PUBKEY_FLAG_BYTE_STRING))
+ {
+ gcry_sexp_t list;
+ void *value;
+ size_t valuelen;
+
+ if (!lvalue)
+ {
+ rc = GPG_ERR_INV_OBJ;
+ goto leave;
+ }
+
+ /* Get optional LABEL. */
+ list = sexp_find_token (ldata, "label", 0);
+ if (list)
+ {
+ ctx->label = sexp_nth_buffer (list, 1, &ctx->labellen);
+ sexp_release (list);
+ }
+
+ /* Get VALUE. */
+ value = sexp_nth_buffer (lvalue, 1, &valuelen);
+ if (!value)
+ rc = GPG_ERR_INV_OBJ;
+ if (rc)
+ goto leave;
+
+ /* Note that mpi_set_opaque takes ownership of VALUE. */
+ *ret_mpi = mpi_set_opaque (NULL, value, valuelen*8);
+ }
else if (ctx->encoding == PUBKEY_ENC_RAW
&& ((parsed_flags & PUBKEY_FLAG_EDDSA)
|| (ctx->flags & PUBKEY_FLAG_EDDSA)))
diff --git a/src/cipher.h b/src/cipher.h
index 652bdd6f..dfcc9121 100644
--- a/src/cipher.h
+++ b/src/cipher.h
@@ -44,6 +44,7 @@
#define PUBKEY_FLAG_DJB_TWEAK (1 << 15)
#define PUBKEY_FLAG_SM2 (1 << 16)
#define PUBKEY_FLAG_PREHASH (1 << 17)
+#define PUBKEY_FLAG_BYTE_STRING (1 << 18)
/*
* The internal flag to select least leak implementation for ECC.
* It needs to be a distinct value not covered by PUBKEY_* above.
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