Introduce tpm2_key_rsa implementing asymmetric TPM RSA key. I submit this first as RFC as I could not execute the keyctl padd in the following sequence (returns EBADF): tpm2_createprimary --hierarchy o -G rsa2048 -c owner.txt tpm2_evictcontrol -c owner.txt 0x81000001 tpm2_getcap handles-persistent openssl genrsa -out private.pem 2048 tpm2_import -C 0x81000001 -G rsa -i private.pem -u key.pub -r key.priv tpm2_encodeobject -C 0x81000001 -u key.pub -r key.priv -o key.priv.pem openssl asn1parse -inform pem -in key.priv.pem -noout -out key.priv.der key_serial=`cat key.priv.der | keyctl padd asymmetric tpm @u` This is derived work from James Prestwood’s earlier work from 2020: https://lore.kernel.org/all/20200518172704.29608-1-prestwoj@xxxxxxxxx/ James Prestwood (1): keys: asymmetric: ASYMMETRIC_TPM2_KEY_RSA_SUBTYPE Jarkko Sakkinen (4): crypto: rsa-pkcs1pad: export rsa1_asn_lookup() tpm: export tpm2_load_context() KEYS: trusted: Do not use WARN when encode fails KEYS: trusted: Migrate tpm2_key_{encode,decode}() to TPM driver crypto/asymmetric_keys/Kconfig | 12 + crypto/asymmetric_keys/Makefile | 1 + crypto/asymmetric_keys/tpm2_key_rsa.c | 648 ++++++++++++++++++ crypto/rsa-pkcs1pad.c | 16 +- drivers/char/tpm/Kconfig | 5 + drivers/char/tpm/Makefile | 5 + drivers/char/tpm/tpm.h | 2 - drivers/char/tpm/tpm2-cmd.c | 77 +++ drivers/char/tpm/tpm2-space.c | 61 -- drivers/char/tpm/tpm2_key.c | 192 ++++++ .../char/tpm}/tpm2key.asn1 | 0 include/crypto/rsa-pkcs1pad.h | 20 + include/crypto/tpm2_key.h | 36 + include/linux/tpm.h | 3 + security/keys/trusted-keys/Makefile | 2 - security/keys/trusted-keys/trusted_tpm2.c | 183 +---- 16 files changed, 1027 insertions(+), 236 deletions(-) create mode 100644 crypto/asymmetric_keys/tpm2_key_rsa.c create mode 100644 drivers/char/tpm/tpm2_key.c rename {security/keys/trusted-keys => drivers/char/tpm}/tpm2key.asn1 (100%) create mode 100644 include/crypto/rsa-pkcs1pad.h create mode 100644 include/crypto/tpm2_key.h -- 2.45.1
