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Support PIN block format 2

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This commit is contained in:
Arnaud Fontaine 2017-07-12 15:41:19 +02:00
parent 55d2b7cddc
commit ab7baa6a55
4 changed files with 220 additions and 44 deletions
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56
src/fr/anssi/smartpgp/Common.java
View File

@ -27,6 +27,62 @@ import javacardx.crypto.*;
public final class Common {
protected static final void checkPinFormat2(final byte[] buf,
short off,
short lc,
final short minlen,
final short maxlen) {
if(lc != (short)8) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
if((buf[off] & (byte)0xf0) != (byte)0x20) {
ISOException.throwIt(ISO7816.SW_WRONG_DATA);
return;
}
lc = (byte)(buf[off++] & (byte)0xf);
if((lc < minlen) || (lc > maxlen)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
for(short i = 0; i < lc; ++i) {
byte value;
if((byte)(i & (byte)0x1) == (byte)0) {
value = (byte)(buf[off] & (byte)0xf0);
value >>= 4;
} else {
value = (byte)(buf[off] & (byte)0x0f);
++off;
}
if((value < (byte)0) || (value > (byte)9)) {
ISOException.throwIt(ISO7816.SW_WRONG_DATA);
return;
}
}
for(short i = lc; i < (byte)14; ++i) {
byte value;
if((byte)(i & (byte)0x1) == (byte)0) {
value = (byte)(buf[off] & (byte)0xf0);
value >>= 4;
} else {
value = (byte)(buf[off] & (byte)0x0f);
++off;
}
if(value != (byte)0x0f) {
ISOException.throwIt(ISO7816.SW_WRONG_DATA);
return;
}
}
}
protected static final short aesKeyLength(final ECParams params) {
if(params.nb_bits < (short)512) {
return (short)16;

27
src/fr/anssi/smartpgp/Constants.java
View File

@ -39,22 +39,47 @@ public final class Constants {
protected static final byte USER_PIN_RETRY_COUNT = 3;
protected static final byte USER_PIN_MIN_SIZE = 0x06;
protected static final byte USER_PIN_MAX_SIZE = 0x7f; /* max is 0x7f because PIN format 2 */
protected static final byte USER_PIN_MIN_SIZE_FORMAT_2 = 6;
protected static final byte USER_PIN_MAX_SIZE_FORMAT_2 = 12;
protected static final byte[] USER_PIN_DEFAULT = {
0x31, 0x32, 0x33,0x34, 0x35, 0x36
};
protected static final boolean USER_PIN_DEFAULT_IS_FORMAT_2 = false;
/*
protected static final byte[] USER_PIN_DEFAULT = {
(byte)0x26,
(byte)0x12, (byte)0x34, (byte)0x56, (byte)0xff, (byte)0xff,
(byte)0xff, (byte)0xff
};
protected static final boolean USER_PIN_DEFAULT_IS_FORMAT_2 = true;
*/
protected static final boolean USER_PIN_DEFAULT_FORCE_VERIFY_SIGNATURE = true;
protected static final byte USER_PUK_RETRY_COUNT = 3;
protected static final byte USER_PUK_MIN_SIZE = 0x08;
protected static final byte USER_PUK_MAX_SIZE = 0x7f; /* max is 0x7f because PIN format 2 */
protected static final byte USER_PUK_MIN_SIZE_FORMAT_2 = 8;
protected static final byte USER_PUK_MAX_SIZE_FORMAT_2 = 12;
protected static final byte ADMIN_PIN_RETRY_COUNT = 3;
protected static final byte ADMIN_PIN_MIN_SIZE = 0x08;
protected static final byte ADMIN_PIN_MAX_SIZE = 0x7f; /* max is 0x7f because PIN format 2 */
protected static final byte ADMIN_PIN_MIN_SIZE_FORMAT_2 = 8;
protected static final byte ADMIN_PIN_MAX_SIZE_FORMAT_2 = 12;
protected static final byte[] ADMIN_PIN_DEFAULT = {
0x31, 0x32, 0x33,0x34, 0x35, 0x36, 0x37, 0x38
};
protected static final boolean ADMIN_PIN_DEFAULT_IS_FORMAT_2 = false;
/*
protected static final byte[] ADMIN_PIN_DEFAULT = {
(byte)0x28,
(byte)0x12, (byte)0x34, (byte)0x56, (byte)0x78, (byte)0xff,
(byte)0xff, (byte)0xff
};
protected static final boolean ADMIN_PIN_DEFAULT_IS_FORMAT_2 = true;
*/
protected static final byte FINGERPRINT_SIZE = 20;
protected static final byte GENERATION_DATE_SIZE = 4;
@ -167,7 +192,7 @@ public final class Constants {
(byte)0x00, (byte)0x20, /* max length get challenge */
(byte)0x04, (byte)0x80, /* max length of carholder certificate */
(byte)0x00, (byte)0xff, /* max length of special DOs (private, login, url, KDF-DO) */
(byte)0x00, /* PIN format 2 not supported */
(byte)0x01, /* PIN format 2 is supported */
(byte)0x00 /* MSE not supported */
};

6
src/fr/anssi/smartpgp/Persistent.java
View File

@ -80,13 +80,16 @@ public final class Persistent {
protected final OwnerPIN user_pin; /* PW1 */
protected byte user_pin_length;
protected boolean user_pin_is_format_2;
protected boolean user_pin_force_verify_signature;
protected final OwnerPIN user_puk; /* resetting code */
protected byte user_puk_length;
protected boolean user_puk_is_format_2;
protected final OwnerPIN admin_pin; /* PW3 */
protected byte admin_pin_length;
protected boolean admin_pin_is_format_2;
@ -237,14 +240,17 @@ public final class Persistent {
JCSystem.beginTransaction();
user_pin_length = (byte)Constants.USER_PIN_DEFAULT.length;
user_pin_is_format_2 = Constants.USER_PIN_DEFAULT_IS_FORMAT_2;
user_pin.update(Constants.USER_PIN_DEFAULT, (short)0, user_pin_length);
user_pin.resetAndUnblock();
JCSystem.commitTransaction();
user_puk_length = 0;
user_puk_is_format_2 = Constants.USER_PIN_DEFAULT_IS_FORMAT_2;
JCSystem.beginTransaction();
admin_pin_length = (byte)Constants.ADMIN_PIN_DEFAULT.length;
admin_pin_is_format_2 = Constants.ADMIN_PIN_DEFAULT_IS_FORMAT_2;
admin_pin.update(Constants.ADMIN_PIN_DEFAULT, (short)0, admin_pin_length);
admin_pin.resetAndUnblock();
JCSystem.commitTransaction();

115
src/fr/anssi/smartpgp/SmartPGPApplet.java
View File

@ -158,14 +158,24 @@ public final class SmartPGPApplet extends Applet {
}
private final short writePwStatus(final byte[] buf, short off) {
if(data.user_pin_force_verify_signature) {
buf[off++] = (byte)0x00;
buf[off++] = (byte)(data.user_pin_force_verify_signature ? 0x00 : 0x01);
if(data.user_pin_is_format_2) {
buf[off++] = (byte)0x80 | Constants.USER_PIN_MAX_SIZE_FORMAT_2;
} else {
buf[off++] = (byte)0x01;
}
buf[off++] = Constants.USER_PIN_MAX_SIZE;
}
if(data.user_puk_is_format_2) {
buf[off++] = (byte)0x80 | Constants.USER_PUK_MAX_SIZE_FORMAT_2;
} else {
buf[off++] = Constants.USER_PUK_MAX_SIZE;
}
if(data.admin_pin_is_format_2) {
buf[off++] = (byte)0x80 | Constants.ADMIN_PIN_MAX_SIZE_FORMAT_2;
} else {
buf[off++] = Constants.ADMIN_PIN_MAX_SIZE;
}
buf[off++] = data.user_pin.getTriesRemaining();
if(data.user_puk_length > 0) {
buf[off++] = data.user_puk.getTriesRemaining();
@ -173,6 +183,7 @@ public final class SmartPGPApplet extends Applet {
buf[off++] = (byte)0x00;
}
buf[off++] = data.admin_pin.getTriesRemaining();
return off;
}
@ -477,8 +488,7 @@ public final class SmartPGPApplet extends Applet {
k.certificate_length);
}
private final void processVerify(final short lc,
final byte p1, final byte p2) {
private final void processVerify(short lc, final byte p1, final byte p2) {
sensitiveData();
@ -523,20 +533,30 @@ public final class SmartPGPApplet extends Applet {
switch(p2) {
case (byte)0x81:
case (byte)0x82:
if(data.user_pin_is_format_2) {
Common.checkPinFormat2(transients.buffer,
(short)0, lc,
Constants.USER_PIN_MIN_SIZE_FORMAT_2,
Constants.USER_PIN_MAX_SIZE_FORMAT_2);
} else {
if((lc < Constants.USER_PIN_MIN_SIZE) ||
(lc > Constants.USER_PIN_MAX_SIZE)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
if(p2 == (byte)0x81) {
transients.setUserPinMode81(false);
} else {
transients.setUserPinMode82(false);
}
if(!data.user_pin.check(transients.buffer, (short)0, (byte)lc)) {
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
return;
}
if(p2 == (byte)0x81) {
transients.setUserPinMode81(true);
} else {
@ -545,11 +565,19 @@ public final class SmartPGPApplet extends Applet {
return;
case (byte)0x83:
if(data.admin_pin_is_format_2) {
Common.checkPinFormat2(transients.buffer,
(short)0, lc,
Constants.ADMIN_PIN_MIN_SIZE_FORMAT_2,
Constants.ADMIN_PIN_MAX_SIZE_FORMAT_2);
} else {
if((lc < Constants.ADMIN_PIN_MIN_SIZE) ||
(lc > Constants.ADMIN_PIN_MAX_SIZE)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
if(!data.admin_pin.check(transients.buffer, (short)0, (byte)lc)) {
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
return;
@ -606,11 +634,26 @@ public final class SmartPGPApplet extends Applet {
switch(p2) {
case (byte)0x81:
if(data.user_pin_is_format_2) {
if(lc != (short)(2 * data.user_pin_length)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
Common.checkPinFormat2(transients.buffer,
(short)0, data.user_pin_length,
Constants.USER_PIN_MIN_SIZE_FORMAT_2,
Constants.USER_PIN_MAX_SIZE_FORMAT_2);
Common.checkPinFormat2(transients.buffer,
data.user_pin_length, data.user_pin_length,
Constants.USER_PIN_MIN_SIZE_FORMAT_2,
Constants.USER_PIN_MAX_SIZE_FORMAT_2);
} else {
if((lc < (data.user_pin_length + Constants.USER_PIN_MIN_SIZE)) ||
(lc > (data.user_pin_length + Constants.USER_PIN_MAX_SIZE))) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
off = data.user_pin_length;
if(!data.user_pin.check(transients.buffer, (short)0, off)) {
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
@ -619,26 +662,41 @@ public final class SmartPGPApplet extends Applet {
transients.setUserPinMode81(false);
transients.setUserPinMode82(false);
JCSystem.beginTransaction();
data.user_pin.update(transients.buffer, off, (byte)(lc - off));
data.user_pin_length = off;
data.user_pin_length = (byte)(lc - off);
data.user_pin.update(transients.buffer, off, data.user_pin_length);
JCSystem.commitTransaction();
data.user_pin.resetAndUnblock();
break;
case (byte)0x83:
if(data.admin_pin_is_format_2) {
if(lc != (short)(2 * data.admin_pin_length)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
Common.checkPinFormat2(transients.buffer,
(short)0, data.admin_pin_length,
Constants.ADMIN_PIN_MIN_SIZE_FORMAT_2,
Constants.ADMIN_PIN_MAX_SIZE_FORMAT_2);
Common.checkPinFormat2(transients.buffer,
data.admin_pin_length, data.admin_pin_length,
Constants.ADMIN_PIN_MIN_SIZE_FORMAT_2,
Constants.ADMIN_PIN_MAX_SIZE_FORMAT_2);
} else {
if((lc < (data.admin_pin_length + Constants.ADMIN_PIN_MIN_SIZE)) ||
(lc > (data.admin_pin_length + Constants.ADMIN_PIN_MAX_SIZE))) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
off = data.admin_pin_length;
if(!data.admin_pin.check(transients.buffer, (short)0, off)) {
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
return;
}
JCSystem.beginTransaction();
data.admin_pin.update(transients.buffer, off, (byte)(lc - off));
data.admin_pin_length = off;
data.admin_pin_length = (byte)(lc - off);
data.admin_pin.update(transients.buffer, off, data.admin_pin_length);
JCSystem.commitTransaction();
data.admin_pin.resetAndUnblock();;
break;
@ -663,11 +721,28 @@ public final class SmartPGPApplet extends Applet {
switch(p1) {
case (byte)0x00:
if(data.user_pin_is_format_2) {
if(lc != (short)(data.user_puk_length + data.user_pin_length)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
Common.checkPinFormat2(transients.buffer,
data.user_puk_length, data.user_pin_length,
Constants.USER_PIN_MIN_SIZE_FORMAT_2,
Constants.USER_PIN_MAX_SIZE_FORMAT_2);
} else {
if((lc < (data.user_puk_length + Constants.USER_PIN_MIN_SIZE)) ||
(lc > (data.user_puk_length + Constants.USER_PIN_MAX_SIZE))) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
if(data.user_puk_is_format_2) {
Common.checkPinFormat2(transients.buffer,
(short)0, data.user_puk_length,
Constants.USER_PUK_MIN_SIZE_FORMAT_2,
Constants.USER_PUK_MAX_SIZE_FORMAT_2);
}
off = data.user_puk_length;
if(!data.user_puk.check(transients.buffer, (short)0, off)) {
ISOException.throwIt(ISO7816.SW_SECURITY_STATUS_NOT_SATISFIED);
@ -676,19 +751,26 @@ public final class SmartPGPApplet extends Applet {
transients.setUserPinMode81(false);
transients.setUserPinMode82(false);
JCSystem.beginTransaction();
data.user_pin.update(transients.buffer, off, (byte)(lc - off));
data.user_pin_length = off;
data.user_pin_length = (byte)(lc - off);
data.user_pin.update(transients.buffer, off, data.user_pin_length);
JCSystem.commitTransaction();
data.user_pin.resetAndUnblock();
break;
case (byte)0x02:
assertAdmin();
if(data.user_pin_is_format_2) {
Common.checkPinFormat2(transients.buffer,
(short)0, lc,
Constants.USER_PIN_MIN_SIZE_FORMAT_2,
Constants.USER_PIN_MAX_SIZE_FORMAT_2);
} else {
if((lc < Constants.USER_PIN_MIN_SIZE) ||
(lc > Constants.USER_PIN_MAX_SIZE)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
transients.setUserPinMode81(false);
transients.setUserPinMode82(false);
JCSystem.beginTransaction();
@ -984,7 +1066,7 @@ public final class SmartPGPApplet extends Applet {
ISOException.throwIt(ISO7816.SW_WRONG_DATA);
return;
}
data.user_pin_force_verify_signature = (buf[0] == 0x00);
data.user_pin_force_verify_signature = (buf[0] == 0);
break;
case Constants.TAG_FINGERPRINT_SIG:
@ -1034,11 +1116,18 @@ public final class SmartPGPApplet extends Applet {
case Constants.TAG_RESETTING_CODE:
assertAdmin();
if(data.user_puk_is_format_2) {
Common.checkPinFormat2(transients.buffer,
(short)0, lc,
Constants.USER_PUK_MIN_SIZE_FORMAT_2,
Constants.USER_PUK_MAX_SIZE_FORMAT_2);
} else {
if((lc < Constants.USER_PUK_MIN_SIZE) ||
(lc > Constants.USER_PUK_MAX_SIZE)) {
ISOException.throwIt(ISO7816.SW_WRONG_LENGTH);
return;
}
}
JCSystem.beginTransaction();
data.user_puk_length = (byte)lc;
data.user_puk.update(buf, (short)0, data.user_puk_length);