Example to write signed CHUID?

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Example to write signed CHUID?

Ryan Chapman
Hi,

I'm trying to get an asymmetric CHUID signature on a PIV card, in this case a Yubikey NEO.  The FIPS 201 standard requires it, but yubkey-piv-tool only supports writing a random chuid to the card.
The basic question is... does someone have an example program that, given a signing certificate and associated private key, can write the asymmetric key to a PIV card??

I'm close, but am stuck on long CHUIDs.  I can write a short length one successfully, but the longer one required for the asymmetric key is failing.

Now a little more detail on what I've got so far, if anyone cares...
I've using the piv-tool program to write a short CHUID like so:

# Check current CHUID
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 78 hX!.B..!8B...4.x
E1 97 B4 5A CA C0 1A 82 64 63 A9 92 3B 56 26 35 ...Z....dc..;V&5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

# Write desired CHUID to file 'chuid'
$ X="53:3B:30:19:D4:E7:39:DA:73:9C:ED:39:CE:73:9D:83:68:58:21:08:42:10:84:21:38:42:10:C3:F5:34:10:37:6F:92:E6:EA:92:65:85:0B:AB:D6:9D:73:8B:15:F0:35:08:32:30:33:30:30:31:30:31:3E:00:FE:00"

$ (OLDIFS=$IFS; IFS=:; for x in $X; do echo 0x$x | awk '{printf "%c", $1}'; done; IFS=$OLDIFS ) > chuid

# Write chuid file to the Yubikey
$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID

# Verify it worked... appears to have worked
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 37 hX!.B..!8B...4.7
6F 92 E6 EA 92 65 85 0B AB D6 9D 73 8B 15 F0 35 o....e.....s...5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

TLV '3E' is where the asymmetric signature goes.  Above, look at the last four bytes '3E 00 FE 00'; the '3E 00' signifies a null asymmetric signature.

I loaded my cert authority's pub/private keypair in the java keystore, then used the library at https://code.google.com/p/keysupport-java-api/ to generate the CHUID signature, which ends up being 2077 (0x81D) bytes, a little strange, but ok.

I then try the same thing as before, but encode the '3E' TLV as such:
3E 82 08 1D .. .. <total of 2077 bytes for CHUID asymmetric signature payload> .. ..
82 08 1D is BER-TLV to indicate 2077 bytes

What ended up in the 'chuid' file:
53 3b 30 19 d4 e7 39 da 73 9c ed 39 ce 73 9d 83 68 58 21 08 42 10 84 21 38 42 10 c3 f5 34 10 05 9b 23 97 21 6e ee b0 2d b8 d6 01 0a 69 99 3c 35 08 32 30 33 30 30 31 30 31 3e 82 08 1d .. .. <2077 bytes for asymm signature> .. .. fe 00

When I attempt to write the 'chuid' file using piv-tools, I get this error:

$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID
object tag or length not valid

I'm hoping I missed something elementary.  Any ideas?

Thanks

Ryan


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Re: Example to write signed CHUID?

Douglas E Engert
The encoding does not look correct. The 53 tab should be followed by length of the rest of the object including the signature. and FE:00 on the end.
An example from the NIST demo card 1 where this is in the CHUID:
Expiration: 20301231
FASCN: ;3201=0295=759494=1=1=6464979587132011?8
FASCN-HEX: D6501858289D6DCACC9325A16859A46927C9D45C86501843E2
GUID: 00000000000000000000000000000000

The chuid is of length 2315 0x090b
The tag 53 has length 82 (two byte length following)
  0907 is the length of the rest of the data
 0907 + 4 (length of (tag and length bytes)) = 2315


$ od -t x1 < chuid
0000000 53 82 09 07 30 19 d6 50 18 58 28 9d 6d ca cc 93
0000020 25 a1 68 59 a4 69 27 c9 d4 5c 86 50 18 43 e2 34
0000040 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0000060 00 35 08 32 30 33 30 31 32 33 31 3e 82 08 ca 30
0000100 82 08 c6 06 09 2a 86 48 86 f7 0d 01 07 02 a0 82
0000120 08 b7 30 82 08 b3 02 01 03 31 0f 30 0d 06 09 60
0000140 86 48 01 65 03 04 02 01 05 00 30 0a 06 08 60 86
0000160 48 01 65 03 06 01 a0 82 06 09 30 82 06 05 30 82
0000200 04 ed a0 03 02 01 02 02 01 01 30 0d 06 09 2a 86
0000220 48 86 f7 0d 01 01 0b 05 00 30 72 31 0b 30 09 06
0000240 03 55 04 06 13 02 55 53 31 1f 30 1d 06 03 55 04
0000260 0a 13 16 54 65 73 74 20 43 65 72 74 69 66 69 63
0000300 61 74 65 73 20 32 30 31 30 31 10 30 0e 06 03 55
0000320 04 0b 13 07 54 65 73 74 20 43 41 31 30 30 2e 06
0000340 03 55 04 03 13 27 54 65 73 74 20 52 53 41 20 32
0000360 30 34 38 2d 62 69 74 20 43 41 20 66 6f 72 20 54
...
0004340 55 8d af 92 94 3d 16 b3 b3 60 32 f5 12 16 53 db
0004360 39 68 b7 3c fd 45 1f aa 31 f0 4a 31 d5 47 a1 36
0004400 22 d5 53 dd 5a c2 6c a7 53 fe 00
0004413

Note NEO may have length restrictions on objects.  At least the NEO 3 did.
The NEO 4 may not, I have not tried this yet.


On 12/7/2015 1:42 AM, Ryan Chapman wrote:
Hi,

I'm trying to get an asymmetric CHUID signature on a PIV card, in this case a Yubikey NEO.  The FIPS 201 standard requires it, but yubkey-piv-tool only supports writing a random chuid to the card.
The basic question is... does someone have an example program that, given a signing certificate and associated private key, can write the asymmetric key to a PIV card??

I'm close, but am stuck on long CHUIDs.  I can write a short length one successfully, but the longer one required for the asymmetric key is failing.

Now a little more detail on what I've got so far, if anyone cares...
I've using the piv-tool program to write a short CHUID like so:

# Check current CHUID
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 78 hX!.B..!8B...4.x
E1 97 B4 5A CA C0 1A 82 64 63 A9 92 3B 56 26 35 ...Z....dc..;V&5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

# Write desired CHUID to file 'chuid'
$ X="53:3B:30:19:D4:E7:39:DA:73:9C:ED:39:CE:73:9D:83:68:58:21:08:42:10:84:21:38:42:10:C3:F5:34:10:37:6F:92:E6:EA:92:65:85:0B:AB:D6:9D:73:8B:15:F0:35:08:32:30:33:30:30:31:30:31:3E:00:FE:00"

$ (OLDIFS=$IFS; IFS=:; for x in $X; do echo 0x$x | awk '{printf "%c", $1}'; done; IFS=$OLDIFS ) > chuid

# Write chuid file to the Yubikey
$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID

# Verify it worked... appears to have worked
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 37 hX!.B..!8B...4.7
6F 92 E6 EA 92 65 85 0B AB D6 9D 73 8B 15 F0 35 o....e.....s...5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

TLV '3E' is where the asymmetric signature goes.  Above, look at the last four bytes '3E 00 FE 00'; the '3E 00' signifies a null asymmetric signature.

I loaded my cert authority's pub/private keypair in the java keystore, then used the library at https://code.google.com/p/keysupport-java-api/ to generate the CHUID signature, which ends up being 2077 (0x81D) bytes, a little strange, but ok.

I then try the same thing as before, but encode the '3E' TLV as such:
3E 82 08 1D .. .. <total of 2077 bytes for CHUID asymmetric signature payload> .. ..
82 08 1D is BER-TLV to indicate 2077 bytes

What ended up in the 'chuid' file:
53 3b 30 19 d4 e7 39 da 73 9c ed 39 ce 73 9d 83 68 58 21 08 42 10 84 21 38 42 10 c3 f5 34 10 05 9b 23 97 21 6e ee b0 2d b8 d6 01 0a 69 99 3c 35 08 32 30 33 30 30 31 30 31 3e 82 08 1d .. .. <2077 bytes for asymm signature> .. .. fe 00

When I attempt to write the 'chuid' file using piv-tools, I get this error:

$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID
object tag or length not valid

I'm hoping I missed something elementary.  Any ideas?

Thanks

Ryan



------------------------------------------------------------------------------
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Use one codebase in this all-in-one HTML5 development environment.
Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
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Re: Example to write signed CHUID?

Douglas E Engert
In reply to this post by Ryan Chapman
looking at keysupport/nist80073/datamodel/PIVCardHolderUniqueID.java
it looks like getEncoded()
does an encode().

Bit the encode()  line 203 does:
   this.chuid = baos.toByteArray();

but this does not have the PIV_DATA  TLV that   piv-tool is expecting.

./nist80073/cardedge/PIVDataTempl.java encode will add this:

111                         TLV _data = BERTLVFactory.encodeTLV(new Tag(Tag.PIV_DATA), this.data);



On 12/7/2015 1:42 AM, Ryan Chapman wrote:
Hi,

I'm trying to get an asymmetric CHUID signature on a PIV card, in this case a Yubikey NEO.  The FIPS 201 standard requires it, but yubkey-piv-tool only supports writing a random chuid to the card.
The basic question is... does someone have an example program that, given a signing certificate and associated private key, can write the asymmetric key to a PIV card??

I'm close, but am stuck on long CHUIDs.  I can write a short length one successfully, but the longer one required for the asymmetric key is failing.

Now a little more detail on what I've got so far, if anyone cares...
I've using the piv-tool program to write a short CHUID like so:

# Check current CHUID
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 78 hX!.B..!8B...4.x
E1 97 B4 5A CA C0 1A 82 64 63 A9 92 3B 56 26 35 ...Z....dc..;V&5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

# Write desired CHUID to file 'chuid'
$ X="53:3B:30:19:D4:E7:39:DA:73:9C:ED:39:CE:73:9D:83:68:58:21:08:42:10:84:21:38:42:10:C3:F5:34:10:37:6F:92:E6:EA:92:65:85:0B:AB:D6:9D:73:8B:15:F0:35:08:32:30:33:30:30:31:30:31:3E:00:FE:00"

$ (OLDIFS=$IFS; IFS=:; for x in $X; do echo 0x$x | awk '{printf "%c", $1}'; done; IFS=$OLDIFS ) > chuid

# Write chuid file to the Yubikey
$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID

# Verify it worked... appears to have worked
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 37 hX!.B..!8B...4.7
6F 92 E6 EA 92 65 85 0B AB D6 9D 73 8B 15 F0 35 o....e.....s...5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

TLV '3E' is where the asymmetric signature goes.  Above, look at the last four bytes '3E 00 FE 00'; the '3E 00' signifies a null asymmetric signature.

I loaded my cert authority's pub/private keypair in the java keystore, then used the library at https://code.google.com/p/keysupport-java-api/ to generate the CHUID signature, which ends up being 2077 (0x81D) bytes, a little strange, but ok.

I then try the same thing as before, but encode the '3E' TLV as such:
3E 82 08 1D .. .. <total of 2077 bytes for CHUID asymmetric signature payload> .. ..
82 08 1D is BER-TLV to indicate 2077 bytes

What ended up in the 'chuid' file:
53 3b 30 19 d4 e7 39 da 73 9c ed 39 ce 73 9d 83 68 58 21 08 42 10 84 21 38 42 10 c3 f5 34 10 05 9b 23 97 21 6e ee b0 2d b8 d6 01 0a 69 99 3c 35 08 32 30 33 30 30 31 30 31 3e 82 08 1d .. .. <2077 bytes for asymm signature> .. .. fe 00

When I attempt to write the 'chuid' file using piv-tools, I get this error:

$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID
object tag or length not valid

I'm hoping I missed something elementary.  Any ideas?

Thanks

Ryan



------------------------------------------------------------------------------
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Give your users amazing mobile app experiences with Intel(R) XDK.
Use one codebase in this all-in-one HTML5 development environment.
Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
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Re: Example to write signed CHUID?

Ryan Chapman
Thanks for the pointers Douglas.  You were right--the size of the CHUID object was incorrect (53 <length> xx xx xx). I was able to use the function you suggested in PIVDataTempl.java to encode the signed CHUID and then use piv-tool to load it successfully.


On Dec 7, 2015, at 10:44 AM, Douglas E Engert <[hidden email]> wrote:

looking at keysupport/nist80073/datamodel/PIVCardHolderUniqueID.java
it looks like getEncoded()
does an encode().

Bit the encode()  line 203 does:
   this.chuid = baos.toByteArray();

but this does not have the PIV_DATA  TLV that   piv-tool is expecting.

./nist80073/cardedge/PIVDataTempl.java encode will add this:

111                         TLV _data = BERTLVFactory.encodeTLV(new Tag(Tag.PIV_DATA), this.data);



On 12/7/2015 1:42 AM, Ryan Chapman wrote:
Hi,

I'm trying to get an asymmetric CHUID signature on a PIV card, in this case a Yubikey NEO.  The FIPS 201 standard requires it, but yubkey-piv-tool only supports writing a random chuid to the card.
The basic question is... does someone have an example program that, given a signing certificate and associated private key, can write the asymmetric key to a PIV card??

I'm close, but am stuck on long CHUIDs.  I can write a short length one successfully, but the longer one required for the asymmetric key is failing.

Now a little more detail on what I've got so far, if anyone cares...
I've using the piv-tool program to write a short CHUID like so:

# Check current CHUID
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 78 hX!.B..!8B...4.x
E1 97 B4 5A CA C0 1A 82 64 63 A9 92 3B 56 26 35 ...Z....dc..;V&5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

# Write desired CHUID to file 'chuid'
$ X="53:3B:30:19:D4:E7:39:DA:73:9C:ED:39:CE:73:9D:83:68:58:21:08:42:10:84:21:38:42:10:C3:F5:34:10:37:6F:92:E6:EA:92:65:85:0B:AB:D6:9D:73:8B:15:F0:35:08:32:30:33:30:30:31:30:31:3E:00:FE:00"

$ (OLDIFS=$IFS; IFS=:; for x in $X; do echo 0x$x | awk '{printf "%c", $1}'; done; IFS=$OLDIFS ) > chuid

# Write chuid file to the Yubikey
$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID

# Verify it worked... appears to have worked
$ piv-tool -A A:9B:03 -s "00:CB:3F:FF:05:5C:03:5F:C1:02:00"
Using reader with a card: Yubico Yubikey NEO CCID
Sending: 00 CB 3F FF 05 5C 03 5F C1 02 00
Received (SW1=0x90, SW2=0x00):
53 3B 30 19 D4 E7 39 DA 73 9C ED 39 CE 73 9D 83 S;0...9.s..9.s..
68 58 21 08 42 10 84 21 38 42 10 C3 F5 34 10 37 hX!.B..!8B...4.7
6F 92 E6 EA 92 65 85 0B AB D6 9D 73 8B 15 F0 35 o....e.....s...5
08 32 30 33 30 30 31 30 31 3E 00 FE 00          .20300101>...

TLV '3E' is where the asymmetric signature goes.  Above, look at the last four bytes '3E 00 FE 00'; the '3E 00' signifies a null asymmetric signature.

I loaded my cert authority's pub/private keypair in the java keystore, then used the library at https://code.google.com/p/keysupport-java-api/ to generate the CHUID signature, which ends up being 2077 (0x81D) bytes, a little strange, but ok.

I then try the same thing as before, but encode the '3E' TLV as such:
3E 82 08 1D .. .. <total of 2077 bytes for CHUID asymmetric signature payload> .. ..
82 08 1D is BER-TLV to indicate 2077 bytes

What ended up in the 'chuid' file:
53 3b 30 19 d4 e7 39 da 73 9c ed 39 ce 73 9d 83 68 58 21 08 42 10 84 21 38 42 10 c3 f5 34 10 05 9b 23 97 21 6e ee b0 2d b8 d6 01 0a 69 99 3c 35 08 32 30 33 30 30 31 30 31 3e 82 08 1d .. .. <2077 bytes for asymm signature> .. .. fe 00

When I attempt to write the 'chuid' file using piv-tools, I get this error:

$ piv-tool -A A:9B:03 -O 3000 -i chuid
Using reader with a card: Yubico Yubikey NEO CCID
object tag or length not valid

I'm hoping I missed something elementary.  Any ideas?

Thanks

Ryan



------------------------------------------------------------------------------
Go from Idea to Many App Stores Faster with Intel(R) XDK
Give your users amazing mobile app experiences with Intel(R) XDK.
Use one codebase in this all-in-one HTML5 development environment.
Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140


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Give your users amazing mobile app experiences with Intel(R) XDK.
Use one codebase in this all-in-one HTML5 development environment.
Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs.
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