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.TH "nvme_read_key" 9 "nvme_read_key" "April 2025" "libnvme API manual" LINUX
.SH NAME
nvme_read_key \- Read key raw data
.SH SYNOPSIS
.B "unsigned char *" nvme_read_key
.BI "(long keyring_id " ","
.BI "long key_id " ","
.BI "int *len " ");"
.SH ARGUMENTS
.IP "keyring_id" 12
Id of the keyring holding key_id
.IP "key_id" 12
Key id
.IP "len" 12
Length of the returned data
.SH "DESCRIPTION"
Links the keyring specified by \fIkeyring_id\fP into the session
keyring and reads the payload of the key specified by \fIkey_id\fP.
\fIlen\fP holds the size of the returned buffer.
If \fIkeyring\fP is 0 the default keyring '.nvme' is used.
.SH "RETURN"
Pointer to the payload on success,
or NULL with errno set otherwise.
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