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Merged
matteo-frigo merged 1 commit into from
Feb 5, 2026
+127 −8
Merged

Project import generated by Copybara. #127

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53 changes: 48 additions & 5 deletions lib/circuits/mdoc/mdoc_attribute_ids.h
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Original file line number Diff line number Diff line change
Expand Up @@ -29,20 +29,21 @@ constexpr const char* kAAMVANamespace = "org.iso.18013.5.1.aamva";
constexpr const char* kEUAVNamespace = "eu.europa.ec.av.1";
constexpr const char* kEUDIPIDNamespace = "eu.europa.ec.eudi.pid.1";
constexpr const char* kISO23220Namespace = "org.iso.23220.1";
constexpr const char* kISO23220PhotoIDNamespace =
"org.iso.23220.photoID.1";
constexpr const char* kISO23220PhotoIDNamespace = "org.iso.23220.photoID.1";
constexpr const char* kISO23220DTCNamespace = "org.iso.23220.dtc.1";
constexpr const char* kAadhaarNamespace = "in.gov.uidai.aadhaar.1";

constexpr const char* kSupportedNamespaces[] = {
kMDLNamespace, kAAMVANamespace, kEUAVNamespace,
kEUDIPIDNamespace, kISO23220Namespace, kISO23220PhotoIDNamespace,
kISO23220DTCNamespace};
kMDLNamespace, kAAMVANamespace, kEUAVNamespace,
kEUDIPIDNamespace, kISO23220Namespace, kISO23220PhotoIDNamespace,
kISO23220DTCNamespace, kAadhaarNamespace};

constexpr const char* kIDPassDocType = "com.google.wallet.idcard.1";
constexpr const char* kMDLDocType = "org.iso.18013.5.1.mDL";
constexpr const char* kEUAVDocType = "eu.europa.ec.av.1";
constexpr const char* kEUDIPIDDocType = "eu.europa.ec.eudi.pid.1";
constexpr const char* kISO23220PhotoIDDocType = "org.iso.23220.photoID.1";
constexpr const char* kAadhaarDocType = "in.gov.uidai.aadhaar.1";

// Extracted from
// https://github.com/ISOWG10/ISO-18013/blob/main/Working%20Documents/Working%20Draft%20WG%2010_N2549_ISO-IEC%2018013-5-%20Personal%20identification%20%E2%80%94%20ISO-compliant%20driving%20licence%20%E2%80%94%20Part%205-%20Mobile%20driving%20lic.pdf
Expand Down Expand Up @@ -261,6 +262,48 @@ constexpr MdocAttribute kMdocAttributes[] = {
{"age_over_65", kEUAVNamespace},
{"age_over_67", kEUAVNamespace},
{"portrait", kEUAVNamespace},

// Aadhaar attributes
{"credential_issuing_date", kAadhaarNamespace},
{"enrolment_date", kAadhaarNamespace},
{"enrolment_number", kAadhaarNamespace},
{"is_nri", kAadhaarNamespace},
{"resident_image", kAadhaarNamespace},
{"resident_name", kAadhaarNamespace},
{"local_resident_name", kAadhaarNamespace},
{"age_above18", kAadhaarNamespace},
{"age_above60", kAadhaarNamespace},
{"age_above75", kAadhaarNamespace},
{"dob", kAadhaarNamespace},
{"gender", kAadhaarNamespace},
{"building", kAadhaarNamespace},
{"local_building", kAadhaarNamespace},
{"locality", kAadhaarNamespace},
{"local_locality", kAadhaarNamespace},
{"street", kAadhaarNamespace},
{"local_street", kAadhaarNamespace},
{"landmark", kAadhaarNamespace},
{"local_landmark", kAadhaarNamespace},
{"vtc", kAadhaarNamespace},
{"local_vtc", kAadhaarNamespace},
{"sub_district", kAadhaarNamespace},
{"local_sub_district", kAadhaarNamespace},
{"district", kAadhaarNamespace},
{"local_district", kAadhaarNamespace},
{"state", kAadhaarNamespace},
{"local_state", kAadhaarNamespace},
{"po_name", kAadhaarNamespace},
{"local_po_name", kAadhaarNamespace},
{"pincode", kAadhaarNamespace},
{"address", kAadhaarNamespace},
{"local_address", kAadhaarNamespace},
{"mobile", kAadhaarNamespace},
{"masked_mobile", kAadhaarNamespace},
{"email", kAadhaarNamespace},
{"masked_email", kAadhaarNamespace},
{"masked_uid", kAadhaarNamespace},
{"aadhaar_type", kAadhaarNamespace},
{"expires_on", kAadhaarNamespace},
};

} // namespace proofs
Expand Down
82 changes: 79 additions & 3 deletions lib/gf2k/sysdep.h
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,7 @@ static inline std::array<uint64_t, 2> uint64x2_of_gf2_128(gf2_128_elt_t x) {
}

static inline gf2_128_elt_t gf2_128_of_uint64x2(
const std::array<uint64_t, 2> &x) {
const std::array<uint64_t, 2>& x) {
return gf2_128_elt_t{static_cast<poly64_t>(x[0]),
static_cast<poly64_t>(x[1])};
}
Expand Down Expand Up @@ -137,7 +137,7 @@ static inline std::array<uint64_t, 2> uint64x2_of_gf2_128(gf2_128_elt_t x) {
}

static inline gf2_128_elt_t gf2_128_of_uint64x2(
const std::array<uint64_t, 2> &x) {
const std::array<uint64_t, 2>& x) {
return gf2_128_elt_t{static_cast<poly64_t>(x[0]),
static_cast<poly64_t>(x[1])};
}
Expand Down Expand Up @@ -247,7 +247,83 @@ static inline gf2_128_elt_t gf2_128_mul(gf2_128_elt_t x, gf2_128_elt_t y) {

} // namespace proofs
#else
#error "unimplemented gf2k/sysdep.h"

// Generic implementation assuming a 64x64->64 integer multiplier.
struct gf2_128_elt_t {
uint64_t l[2];
};

static inline std::array<uint64_t, 2> uint64x2_of_gf2_128(gf2_128_elt_t x) {
return std::array<uint64_t, 2>{x.l[0], x.l[1]};
}

static inline gf2_128_elt_t gf2_128_of_uint64x2(
const std::array<uint64_t, 2>& x) {
return gf2_128_elt_t{x[0], x[1]};
}

static inline gf2_128_elt_t gf2_128_add(gf2_128_elt_t x, gf2_128_elt_t y) {
return gf2_128_elt_t{x.l[0] ^ y.l[0], x.l[1] ^ y.l[1]};
}

// 64x64->64 bit GF(2)[X] multiplication via Kronecker
// substitution. Modeled after the Highway library
// https://github.com/google/highway/blob/master/hwy/ops/generic_ops-inl.h
// and the ghash implementation in BearSSL.
static inline uint64_t clmul64_lo(uint64_t x, uint64_t y) {
uint64_t m0 = 0x1111111111111111ull, m1 = 0x2222222222222222ull,
m2 = 0x4444444444444444ull, m3 = 0x8888888888888888ull;
uint64_t x0 = x & m0, x1 = x & m1, x2 = x & m2, x3 = x & m3;
uint64_t y0 = y & m0, y1 = y & m1, y2 = y & m2, y3 = y & m3;
uint64_t z0 = (x0 * y0) ^ (x1 * y3) ^ (x2 * y2) ^ (x3 * y1);
uint64_t z1 = (x0 * y1) ^ (x1 * y0) ^ (x2 * y3) ^ (x3 * y2);
uint64_t z2 = (x0 * y2) ^ (x1 * y1) ^ (x2 * y0) ^ (x3 * y3);
uint64_t z3 = (x0 * y3) ^ (x1 * y2) ^ (x2 * y1) ^ (x3 * y0);
return (z0 & m0) | (z1 & m1) | (z2 & m2) | (z3 & m3);
}

static inline uint64_t bitrev64(uint64_t n) {
n = ((n >> 1) & 0x5555555555555555ull) | ((n & 0x5555555555555555ull) << 1);
n = ((n >> 2) & 0x3333333333333333ull) | ((n & 0x3333333333333333ull) << 2);
n = ((n >> 4) & 0x0f0f0f0f0f0f0f0full) | ((n & 0x0f0f0f0f0f0f0f0full) << 4);
n = ((n >> 8) & 0x00ff00ff00ff00ffull) | ((n & 0x00ff00ff00ff00ffull) << 8);
n = ((n >> 16) & 0x0000ffff0000ffffull) | ((n & 0x0000ffff0000ffffull) << 16);
return (n << 32) | (n >> 32);
}

static inline uint64_t clmul64_hi(uint64_t x, uint64_t y) {
return bitrev64(clmul64_lo(bitrev64(x), bitrev64(y))) >> 1;
}

// 64x64 -> 128
static inline gf2_128_elt_t clmul64(uint64_t x, uint64_t y) {
return gf2_128_elt_t{clmul64_lo(x, y), clmul64_hi(x, y)};
}

// return (t0 + x^64 * t1)
static inline gf2_128_elt_t gf2_128_reduce(gf2_128_elt_t t0, gf2_128_elt_t t1) {
uint64_t a = t1.l[1];
t0.l[0] ^= a;
t0.l[0] ^= a << 1;
t0.l[1] ^= a >> 63;
t0.l[0] ^= a << 2;
t0.l[1] ^= a >> 62;
t0.l[0] ^= a << 7;
t0.l[1] ^= a >> 57;
t0.l[1] ^= t1.l[0];
return t0;
}
static inline gf2_128_elt_t gf2_128_mul(gf2_128_elt_t x, gf2_128_elt_t y) {
// karatsuba
gf2_128_elt_t t0 = clmul64(x.l[0], y.l[0]);
gf2_128_elt_t t2 = clmul64(x.l[1], y.l[1]);
gf2_128_elt_t t1 = clmul64(x.l[0] ^ x.l[1], y.l[0] ^ y.l[1]);
t1 = gf2_128_add(t1, gf2_128_add(t0, t2));
t1 = gf2_128_reduce(t1, t2);
t0 = gf2_128_reduce(t0, t1);
return t0;
}

#endif

#endif // PRIVACY_PROOFS_ZK_LIB_GF2K_SYSDEP_H_
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