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Update ea_code.h #228

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merged 2 commits into from
Jan 19, 2024
Merged

Update ea_code.h #228

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cf3008f
Update ea_code.h
maths644311798 Jan 18, 2024
acd1268
Update ea_code.h
maths644311798 Jan 18, 2024
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9 changes: 4 additions & 5 deletions yacl/crypto/primitives/code/ea_code.h
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Original file line number Diff line number Diff line change
Expand Up @@ -82,8 +82,7 @@ class ExAccCode : public ExAccCodeInterface {

explicit ExAccCode(uint32_t n, uint32_t m) : n_(n), m_(m) {
YACL_ENFORCE(m >= n);
YACL_ENFORCE(n > d,
"ExAccCode: Dimension should be much greater than Weight");
YACL_ENFORCE(n > d, "ExAccCode: Length should be much greater than Weight");
};

uint32_t GetDimention() const override { return m_; }
Expand All @@ -94,7 +93,7 @@ class ExAccCode : public ExAccCodeInterface {

// Expand Accumulate Code
// dual LPN problem --> G = A * B
// thus, dual encode would be xG = (xA) * B = y * B, y[i] = sum_{j<i} x[i]s
// thus, dual encode would be xG = (xA) * B = y * B, y[i] = sum_{j<=i} x[j]
void DualEncode(absl::Span<uint128_t> in,
absl::Span<uint128_t> out) const override {
DualEncodeImpl<uint128_t>(in, out);
Expand Down Expand Up @@ -134,7 +133,7 @@ class ExAccCode : public ExAccCodeInterface {
YACL_ENFORCE(in.size() >= m_);
YACL_ENFORCE(out.size() >= n_);

// y[i] = sum_{j<=i} x[i]
// y[i] = sum_{j<=i} x[j]
Accumulate<T>(in);
// d-Local Linear Code
Expand<T>(absl::MakeConstSpan(in), out);
Expand All @@ -149,7 +148,7 @@ class ExAccCode : public ExAccCodeInterface {
YACL_ENFORCE(out0.size() >= n_);
YACL_ENFORCE(out1.size() >= n_);

// y[i] = sum_{j<i} x[i]
// y[i] = sum_{j<=i} x[j]
Accumulate<T>(in0);
Accumulate<K>(in1);
// d-Local Linear Code
Expand Down